Month: February 2022

Category: ethers-buliding-blocks. Authors Sun, J; Hang, TJ; Cao, L; Fan, XL; Feng, YL; Tan, L; Li, KY; Wang, QY; Liu, YX; Yang, GJ in ELSEVIER SCI LTD published article about in [Sun, Jing; Hang, Taijun; Li, Keyu; Wang, Qinyi; Liu, Yingxiang; Yang, Gongjun] China Pharmaceut Univ, Key Lab Drug Qual Control & Pharmacovigilance, Sch Pharm, Minist Educ, Nanjing 211198, Peoples R China; [Sun, Jing; Cao, Ling; Fan, Xialei; Feng, Youlong; Tan, Li] Jiangsu Inst Food & Drug Control, Nanjing 210019, Peoples R China in 2021.0, Cited 69.0. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8

China produces and consumes large quantities of brominated flame retardants (BFRs) as well as several other unregulated electronic waste recycling activities, causing high BFR concentrations in the natural environment. Thus, Traditional Chinese Medicines (TCMs) may be contaminated by legacy BFRs (e.g. polybrominated diphenyl ethers (PBDEs)) and emerging BFRs (eBERs, such as decabromodiphenyl ethane (DBDPE)) during growth, processing, packaging, and transportation. Pheretima, which is a typical animal drug recorded in Chinese Pharmacopoeia, was used as an example to evaluate human exposure to BFRs through TCM intake. This study is the first to determine 25 PBDEs and 5 eBERs in Pheretima and estimate the daily BFR intake via Pheretima-containing TCMs. Twenty-seven Shanghai Pheretima and fifty-one Guang Pheretima samples were collected between March and June 2019 in southeast China. High BFR detection frequencies were found in Pheretima, of which BDE-209 and DBDPE were the most predominant analytes. The total PBDE contents ranged from 73 pg/g to 8,725 pg/g, while that of the eBERs varied between 115 pg/g and 2,824 pg/g. The profiles and abundances were found to be species- and origin-dependent. However, the traditional processing of Pheretima may reduce BFR residues. Based on the usual clinical doses of Pheretima and the available chronic oral reference doses of BDE-47, 99, 153, and 209, the mean (95th percentile) of the total hazard quotient was estimated to be 9.1 x 10(-5) (2.7 x 10(-4)). Therefore, there is little risk related to BFR exposure for patients taking formulated Pheretima-containing TCMs. However, it is necessary to establish routine monitoring programs for the co-existence of pollutants in TCMs to perform a systematic and comprehensive risk assessment. (C) 2021 Elsevier Ltd. All rights reserved.

Welcome to talk about 101-84-8, If you have any questions, you can contact Sun, J; Hang, TJ; Cao, L; Fan, XL; Feng, YL; Tan, L; Li, KY; Wang, QY; Liu, YX; Yang, GJ or send Email.. Category: ethers-buliding-blocks

Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

I found the field of Biochemistry & Molecular Biology; Chemistry very interesting. Saw the article Fuzzy characterization and classification of solvents according to their polarity and selectivity. A comparison with the Snyder approach published in 2020. Quality Control of Benzyl ether, Reprint Addresses Sarbu, C (corresponding author), Babes Bolyai Univ, Fac Chem & Chem Engn, Dept Chem, Arany Janos Str 11, RO-400028 Cluj Napoca, Romania.. The CAS is 103-50-4. Through research, I have a further understanding and discovery of Benzyl ether

Advanced chemometric methods, such as fuzzy c-means, a semi-supervised clustering method, and fuzzy discriminant analysis, a robust supervised method, have been successfully applied for characterization and classification of 72 solvents according to the chemical parameters (P’ and x(i)) developed by Snyder. The obtained results (fuzzy partitions) and parameters of the prototypes (robust fuzzy means) clearly demonstrated the efficiency and information power of the advanced fuzzy methods in solvent characterization and classification, and allow a rationale choice of a good solvent or an efficient mixture of solvents in chromatography and other fields. Also, this methodology generates the premises for future investigations using other different properties of solvents.

Quality Control of Benzyl ether. Welcome to talk about 103-50-4, If you have any questions, you can contact Guidea, A; Sarbu, C or send Email.

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Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

Authors Farzana, S; Ruan, YF; Wang, Q; Wu, RB; Kai, Z; Meng, Y; Leung, KMY; Lam, PKS in PERGAMON-ELSEVIER SCIENCE LTD published article about PEARL RIVER DELTA; POLYBROMINATED DIPHENYL ETHERS; CHAIN CHLORINATED PARAFFINS; PERSONAL CARE PRODUCTS; ALTERNATIVE FLAME RETARDANTS; ORGANIC UV-FILTERS; SPATIAL-DISTRIBUTION; PHTHALATE-ESTERS; FRESH-WATER; PERFLUOROALKYL SUBSTANCES in [Farzana, Shazia; Ruan, Yuefei; Wang, Qi; Wu, Rongben; Kai, Zhang; Meng, Yan; Leung, Kenneth M. Y.; Lam, Paul K. S.] City Univ Hong Kong, State Key Lab Marine Pollut SKLMP, Hong Kong, Peoples R China; [Wang, Qi; Wu, Rongben; Lam, Paul K. S.] City Univ Hong Kong, Dept Chem, Hong Kong, Peoples R China; [Leung, Kenneth M. Y.] Univ Hong Kong, Swire Inst Marine Sci, Pokfulam Rd, Hong Kong, Peoples R China; [Leung, Kenneth M. Y.] Univ Hong Kong, Sch Biol Sci, Pokfulam Rd, Hong Kong, Peoples R China; [Ruan, Yuefei; Kai, Zhang; Meng, Yan; Leung, Kenneth M. Y.; Lam, Paul K. S.] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China in 2020.0, Cited 129.0. SDS of cas: 101-84-8. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8

This study aimed to establish marine water quality criteria (MWQC) for emerging chemicals of concern (ECCs) for protecting aquatic life in the Greater Bay Area (GBA) of South China. Despite the frequent occurrence and elevated concentrations of these ECCs in the GBA, there is a lack of regional MWQC for these contaminants. We screened 21 common ECCs that were classified into the following six groups: (1) new persistent organic contaminants; (2) brominated flame retardants; (3) perfluoroalkyl and polyfluoroalkyl substances; (4) pharmaceutically active compounds (PhACs); (5) plasticizers; and (6) personal care products. Globally, MWQC for PhACs remain largely unavailable despite their increasing occurrence in marine environments. Using an integrative scientific approach, we derived interim MWQC for the GBA with specific protection goals. The approach described herein can be applied for the derivation of MWQC for ECCs and the establishment of guidelines for ecological risk assessment in the GBA and other regions.

SDS of cas: 101-84-8. Welcome to talk about 101-84-8, If you have any questions, you can contact Farzana, S; Ruan, YF; Wang, Q; Wu, RB; Kai, Z; Meng, Y; Leung, KMY; Lam, PKS or send Email.

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Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

Recommanded Product: Diphenyl oxide. In 2020.0 APPL CATAL B-ENVIRON published article about POLYBROMINATED DIPHENYL ETHERS; GRAPHITIC CARBON NITRIDE; REDUCTIVE DEBROMINATION; HYDROGEN-PRODUCTION; TETRABROMODIPHENYL ETHERS; DECABROMODIPHENYL ETHER; AQUEOUS-SOLUTIONS; DEGRADATION; TIO2; KINETICS in [Lei, Ming; Wang, Zhiying; Nie, Wenshan; Tang, Heqing] South Cent Univ Nationalities, Coll Resources & Environm Sci, Wuhan 430074, Hubei, Peoples R China; [Zhu, Lihua] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Hubei, Peoples R China in 2020.0, Cited 57.0. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8.

Deep debromination of polybrominated diphenyl ethers (PBDEs) by visible light photocatalysis is still a challenge in the field of halogenated pollutants control. Here, an efficient photocatalyst (Pd/g-C3N4) was prepared by a simple impregnation-chemical reduction method with bulk g-C3N4 and PdCl2 as precursors. Under preferred reaction conditions (visible light irradiation for 120 min), the use of the 0.5% Pd/g-C3N4 composites (0.4 g L-1) yielded an almost complete debromination of BDE47 (10 mu mol L-1) in methanol-water mixture, while the debromination of BDE47 did not occur on pure g-C3N4. A Pd-promoted active H atom species attack and C-Br bond cleavage route was proposed according to the identified degradation intermediates. A catalytic mechanism was further clarified: Pd nanoparticles exerted affinity interaction with bromine atoms, and the storing of electrons on Pd would increase the binding interaction. In the debromination process, methanol acts as both a hole scavenger and a hydrogen donor to provide active H atom species through the reaction of H+ and photogenerated electrons on Pd nanoparticles. The initiation of BDE47 debromination on Pd nanoparticles required an induction period to enrich a critical amount of electrons for stretching the C-Br bond and its subsequent being attacked by active H atoms. The generated 2,2′-dibromodiphenyl ether (BDE4) would be further reduced to bromine-free products by hydro-debromination process or coupling reaction.

Welcome to talk about 101-84-8, If you have any questions, you can contact Lei, M; Wang, ZY; Zhu, LH; Nie, WS; Tang, HQ or send Email.. Recommanded Product: Diphenyl oxide

Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

In 2020.0 ENVIRON RES published article about BROMINATED FLAME RETARDANTS; POLYCHLORINATED-BIPHENYLS PCBS; THYROID-HORMONE LEVELS; POTENTIAL HEALTH-RISK; WASTE RECYCLING AREA; METABOLITES OH-PBDES; IN-HOUSE DUST; UK HUMAN-MILK; BREAST-MILK; CORD-BLOOD in [Wu, Zhineng; Song, Jie; Li, Huijun; Wu, Weidong] Xinxiang Med Univ, Sch Publ Hlth, Xinxiang 453003, Henan, Peoples R China; [He, Chang] Univ Queensland, QAEHS, Brisbane, Qld 4102, Australia; [Han, Wei] Northeast Agr Univ, Coll Resources & Environm, Harbin 150030, Peoples R China; [Zhang, Yadi] Nankai Univ, Tianjin Key Lab Environm Remediat & Pollut Contro, Key Lab Pollut Proc & Environm Criteria, Coll Environm Sci & Engn,Minist Educ, Tianjin 300350, Peoples R China; [Jing, Xiaohua] Anyang Normal Univ, Sch Chem & Chem Engn, Anyang 455002, Peoples R China in 2020.0, Cited 241.0. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8. Category: ethers-buliding-blocks

Polybrominated diphenyl ethers (PBDEs) are extensively used as brominated flame retardants (BFRs) in different types of materials, which have been listed as Persistent Organic Pollutants (POPs) by the Stockholm Convention in 2009 and 2017. Due to their ubiquities in the environment and toxicities, PBDEs have posed great threat to both human health and ecosystems. The aim of this review is to offer a comprehensive understanding of the exposure pathways, levels and trends and associated health risks of PBDEs in human body in a global scale. We systematically reviewed and described the scientific data of PBDE researches worldwide from 2010 to March 2020, focusing on the following three areas: (1) sources and human external exposure pathways of PBDEs; (2) PBDE levels and trends in humans; (3) human data of PBDEs toxicity. Dietary intake and dust ingestion are dominant human exposure pathways. PBDEs were widely detected in human samples, especially in human serum and human milk. Data showed that PBDEs are generally declining in human samples worldwide as a result of their phasing out. Due to the common use of PBDEs, their levels in humans from the USA were generally higher than that in other countries. High concentrations of PBDEs have been detected in humans from PBDE production regions and e-waste recycling sites. BDE-47, -153 and -99 were proved to be the primary congeners in humans. Human toxicity data demonstrated that PBDEs have extensively endocrine disruption effects, developmental effects, and carcinogenic effects among different populations.

Welcome to talk about 101-84-8, If you have any questions, you can contact Wu, ZN; He, C; Han, W; Song, J; Li, HJ; Zhang, YD; Jing, XH; Wu, WD or send Email.. Category: ethers-buliding-blocks

Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

Recently I am researching about CROSS-COUPLING REACTIONS; TRANSITION-METAL; DECYANATION REACTION; LITHIUM REAGENTS; NICKEL CATALYSIS; HALOGEN EXCHANGE; CHLORIDES; IODIDES; ELECTROPHILES; GRIGNARD, Saw an article supported by the NSERCNatural Sciences and Engineering Research Council of Canada (NSERC); NSERC (Canada Research Chair programs); Canada Foundation for InnovationCanada Foundation for InnovationCGIAR [19119, 35261]; Ontario Research Fund; University of TorontoUniversity of Toronto. Quality Control of Diphenyl oxide. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Mills, LR; Graham, JM; Patel, P; Rousseaux, SAL. The CAS is 101-84-8. Through research, I have a further understanding and discovery of Diphenyl oxide

Herein, we report a Ni-catalyzed reductive coupling for the synthesis of benzonitriles from aryl (pseudo)halides and an electrophilic cyanating reagent, 2-methyl-2-phenyl malononitrile (MPMN). MPMN is a bench-stable, carbon-bound electrophilic CN reagent that does not release cyanide under the reaction conditions. A variety of medicinally relevant benzonitriles can be made in good yields. Addition of NaBr to the reaction mixture allows for the use of more challenging aryl electrophiles such as aryl chlorides, tosylates, and triflates. Mechanistic investigations suggest that NaBr plays a role in facilitating oxidative addition with these substrates.

Quality Control of Diphenyl oxide. Bye, fridends, I hope you can learn more about C12H10O, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

HPLC of Formula: C12H10O. I found the field of Environmental Sciences & Ecology very interesting. Saw the article Associations of prenatal exposures to low levels of Polybrominated Diphenyl Ether (PBDE) with thyroid hormones in cord plasma and neurobehavioral development in children at 2 and 4 years published in 2019.0, Reprint Addresses Yuan, W (corresponding author), Fudan Univ, NHC Key Lab Reprod Regulat, Shanghai Inst Planned Parenthood Res, 779 Lao Hu Min Rd, Shanghai 200237, Peoples R China.. The CAS is 101-84-8. Through research, I have a further understanding and discovery of Diphenyl oxide.

Background: Neurotoxic effects of Polybrominated Diphenyl Ethers (PBDEs) at low levels have not been well studied in human population, and whether the associations can be explained by thyroid hormones (THs) remains unclear. Objectives: We examined the associations of prenatal PBDE exposures with THs in cord plasma and neurobehavior of children at 2 and 4 years among general population in China. Methods: Participants were mother-child pairs in the Shanghai-Minhang Birth Cohort Study. Nine PBDE congeners and THs (thyroid stimulating hormone, total thyroxine, free thyroxine, total triiodothyronine, and free triiodothyronine) were determined in cord plasma. Child Behavior Checklist (CBCL/1.5-5) were completed by caregivers to assess children’s neurobehavioral development at 2 and 4 years. In the final analyses, 199 and 307 mother-child pairs at 2 and 4 years were included to examine associations of PBDEs with CBCL scores using Pearson-scale-adjusted Poisson regressions, and 339 subjects were included in linear regression models to investigate the associations between PBDEs and THs. Results: BDE-47 had the highest detection rate of 83.82% with the median concentration of 0.19 ng/g lipid, followed by BDE-28, -99, -100 and -153 with detection rates nearly 50%. We found positive associations between prenatal PBDE concentrations and children’s neurobehavior, including Somatic Complaints, Withdrawn, Sleep Problems and Internalizing Problems in girls, and Somatic Complaints and Attention Problems in boys. We also observed inverse associations of the sum of BDE-47, – 28, – 99, -100 and -153 with THs. However, by adding THs to the models examining associations between PBDEs and CBCL, the main results didn’t measurably change. Conclusions: This study adds new knowledge that prenatal PBDEs at low levels may be related to long-lasting behavioral abnormalities in children and reduced THs in cord plasma. However, the hypothesis that the neurotoxic impact of PBDEs may be explained by alterations in cord THs was not supported.

HPLC of Formula: C12H10O. Welcome to talk about 101-84-8, If you have any questions, you can contact Ji, HL; Liang, H; Wang, ZL; Miao, MH; Wang, X; Zhang, XT; Wen, S; Chen, AM; Sun, XW; Yuan, W or send Email.

Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

COA of Formula: C14H14O. In 2019 PHYS CHEM CHEM PHYS published article about IRON-OXIDE NANOPARTICLES; FE3O4 NANOPARTICLES; X-RAY; SIZE; TEMPERATURE; FERROFLUID; MORPHOLOGY; RANGE; XPS in [Lachowicz, Dorota; Marzec, Mateusz Marek; Gajewska, Marta; Kmita, Angelika; Zukrowski, Jan; Sikora, Marcin] AGH Univ Sci & Technol, Acad Ctr Mat & Nanotechnol, Al A Mickiewicza 30, PL-30059 Krakow, Poland; [Wirecka, Roma; Bernasik, Andrzej] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Al A Mickiewicza 30, PL-30059 Krakow, Poland; [Gorka-Kumik, Weronika] Jagiellonian Univ, Fac Phys Astron & Appl Comp Sci, Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland; [Zapotoczny, Szczepan] Jagiellonian Univ, Fac Chem, Gronostajowa 2, PL-30387 Krakow, Poland in 2019, Cited 66. The Name is Benzyl ether. Through research, I have a further understanding and discovery of 103-50-4.

A broad spectrum of applications of magnetic nanoparticles leads to the need for the precise tuning of their magnetic properties. In this study, a series of magnetite and zinc-ferrite nanoparticles were successfully prepared by modified high-temperature synthesis in a controlled gas atmosphere. Nanoparticles with different zinc to iron ratios and pure Fe3O4 were obtained. The structure of the nanoparticles was studied by transmission electron microscopy and Mossbauer spectroscopy. These revealed the single domain character of the nanoparticles and the influence of the synthesis temperature and zinc to iron ratio on their shape and size. Chemical structure was characterized by inductively coupled plasma optical emission spectroscopy, energy dispersive X-ray spectroscopy and thermogravimetric analysis. X-ray photoelectron spectroscopy coupled with an argon gas cluster ion beam (Ar-GCIB) allowed the study of subsequent layers of the nanoparticles without altering their chemical structure. This revealed the presence of a carbon layer on all nanoparticles consisting of capping agents used in the synthesis and revealed the core-shell character of the zinc ferrite particles. In addition, different types of zinc infusions in the nanoparticle structure were observed when using different Zn/Fe ratios. Finally, magnetic studies performed by means of vibrating sample magnetometry proved the superparamagnetic behavior of all the samples.

COA of Formula: C14H14O. Welcome to talk about 103-50-4, If you have any questions, you can contact Lachowicz, D; Wirecka, R; Gorka-Kumik, W; Marzec, MM; Gajewska, M; Kmita, A; Zukrowski, J; Sikora, M; Zapotoczny, S; Bernasik, A or send Email.

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Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

An article Identification of Cytotoxic Flavor Chemicals in Top-Selling Electronic Cigarette Refill Fluids WOS:000459698900043 published article about BRONCHIOLITIS OBLITERANS; MICROWAVE-POPCORN; TOXICITY; LIQUIDS; CINNAMALDEHYDE; PRODUCTS; FRUIT in [Hua, My; Omaiye, Esther E.] Univ Calif Riverside, Environm Toxicol Grad Program, Riverside, CA 92521 USA; [Luo, Wentai; McWhirter, Kevin J.; Pankow, James F.] Portland State Univ, Dept Chem, Portland, OR 97207 USA; [Luo, Wentai; McWhirter, Kevin J.; Pankow, James F.] Portland State Univ, Dept Civil & Environm Engn, Portland, OR 97207 USA; [Hua, My; Omaiye, Esther E.; Talbot, Prue] Univ Calif Riverside, Dept Mol Cell & Syst Biol, Riverside, CA 92521 USA in 2019, Cited 39. Formula: C14H14O. The Name is Benzyl ether. Through research, I have a further understanding and discovery of 103-50-4

We identified the most popular electronic cigarette (EC) refill fluids using an Internet survey and local and online sales information, quantified their flavor chemicals, and evaluated cytotoxicities of the fluids and flavor chemicals. Berries/Fruits/Citrus was the most popular EC refill fluid flavor category. Twenty popular EC refill fluids were purchased from local shops, and the ingredient flavor chemicals were identified and quantified by gas chromatography-mass spectrometry. Total flavor chemical concentrations ranged from 0.6 to 27.9 mg/ml, and in 95% of the fluids, total flavor concentration was greater than nicotine concentration. The 20 most popular refill fluids contained 99 quantifiable flavor chemicals; each refill fluid contained 22 to 47 flavor chemicals, most being esters. Some chemicals were found frequently, and several were present in most products. At a 1% concentration, 80% of the refill fluids were cytotoxic in the MTT assay. Six pure standards of the flavor chemicals found at the highest concentrations in the two most cytotoxic refill fluids were effective in the MTT assay, and ethyl maltol, which was in over 50% of the products, was the most cytotoxic. These data show that the cytotoxicity of some popular refill fluids can be attributed to their high concentrations of flavor chemicals.

Welcome to talk about 103-50-4, If you have any questions, you can contact Hua, M; Omaiye, EE; Luo, WT; McWhirter, KJ; Pankow, JF; Talbot, P or send Email.. Formula: C14H14O

Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem

An article 3-(Ethoxycarbonyl)-1-(5-methyl-5-(nitrosooxy)hexyl)pyridin-1-ium cation: A green alternative to tert-butyl nitrite for synthesis of nitro-group-containing arenes and drugs at room temperature WOS:000517855700004 published article about IONIC LIQUIDS OILS; ORTHO-NITRATION; STEREOSELECTIVE NITRATION; REGIOSPECIFIC SYNTHESIS; AROMATIC SULFONAMIDES; EFFICIENT SYNTHESIS; IPSO-NITRATION; METAL; NITROOLEFINS; NITROARENES in [Natarajan, Palani] Panjab Univ, Dept Chem, Chandigarh 160014, India; Panjab Univ, Ctr Adv Studies Chem, Chandigarh 160014, India in 2020.0, Cited 67.0. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8. Category: ethers-buliding-blocks

Due to their remarkable properties, task-specific ionic liquids have turned out to be progressively popular over the last few years in the field of green organic synthesis. Herein, for the first time, we report that a new task-specific nitrite-based ionic liquid such as 3-(ethoxycarbonyl)-1-(5-methyl-5-(nitrosooxy)hexyl) pyridin-1-ium bis(trifluoromethanesulfonyl)imides (TS-N-IL) derived from biodegradable ethyl nicotinate indeed acted as an efficient and eco-friendly reagent for the synthesis of highly valuable nitroaromatic compounds and drugs including nitroxynil, tolcapone, niclofolan, flutamide, niclosamide and nitrazepam. The bridging of an ionic liquid with nitrite group not only increases the yield and rate of direct C-N bond formation reaction but also allows easy product separation and recyclability of a byproduct. Nonvolatile nature, easy synthesis, merely stoichiometric need and mildness are a portion of the extra focal points of TS-N-IL while contrasted with tert-butyl nitrite an outstanding and highly-flammable reagent utilized largely in organic synthesis. (C) 2019 Elsevier Ltd. All rights reserved.

Category: ethers-buliding-blocks. Welcome to talk about 101-84-8, If you have any questions, you can contact Natarajan, P; Chaudhary, R; Rani, N; Sakshi; Venugopalan, P or send Email.

Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem