Cochrane, William P. et al. published their research in Journal – Association of Official Analytical Chemists in 1979 | CAS: 5367-32-8

3-Methyl-4-nitroanisole (cas: 5367-32-8) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Electric Literature of C8H9NO3

Quantitation of the contaminants in technical fenitrothion by reverse phase high-pressure liquid chromatography was written by Cochrane, William P.;Lanouette, Monique;Greenhalgh, Roy. And the article was included in Journal – Association of Official Analytical Chemists in 1979.Electric Literature of C8H9NO3 This article mentions the following:

Tech. grade samples of fenitrothion (I) [122-14-5] were analyzed by high-pressure liquid chromatog. on a reverse phase LiChrosorb RP-8 column, using 3 solvent systems and an UV detector set at 269 nm. All com. samples analyzed contained >94% I; in addn, 9 contaminants were identified and quantitated. Bisfenitrothion [4901-42-2] was the major contaminant, with average amounts of 2.46% from one manufacturer and 1.17% from another. The 2nd most abundant toxicant was S-Me fenitrothion [3344-14-7], which was present at an average level of 0.16-0.71%. The amount of fenitrooxon [2255-17-6] was ≤0.046%. Other contaminants quantitated include 2 demethyl fenitrothion [298-00-0] isomers, 3-methyl-4-nitrophenol [2581-34-2], 3-methyl-6-nitrophenol [700-38-9], 3-methyl-4-nitroanisole [5367-32-8], and bis-S-Me fenitrothion [55098-00-5]. The total amount of the constituents quantitated in 9 com. samples was 99.07%. By comparing the amounts of bis-fenitrothion and phenols present in tech. grade fenitrothion, it should be possible to identify the specific manufacturers of the various products. In the experiment, the researchers used many compounds, for example, 3-Methyl-4-nitroanisole (cas: 5367-32-8Electric Literature of C8H9NO3).

3-Methyl-4-nitroanisole (cas: 5367-32-8) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Electric Literature of C8H9NO3

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