Chen, C. Y. et al. published their research in Chemistry of Natural Compounds in 2022 | CAS: 605-94-7

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) 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. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Synthetic Route of C9H10O4

A New Benzoquinone from Antrodia camphorata was written by Chen, C. Y.;Wang, J. J.;Kao, C. L.;Li, H. T.;Wu, M. D.;Cheng, M. J.. And the article was included in Chemistry of Natural Compounds in 2022.Synthetic Route of C9H10O4 This article mentions the following:

A new benzoquinone, 2-hydroxy-3-methoxy-5-methyl-p-benzoquinone (1), along with 11 known compounds including three benzoquinones, 2-methoxy-6-methyl-p-benzoquinone (2), 2,3-dimethoxy-5-methyl-pbenzoquinone (3), and 2-hydroxy-5-methoxy-3-methyl-p-benzoquinone (4); three lignans, 4-hydroxysesamin (5), (+)-sesamin (6), and aptosimon (7); five benzenoids, 2,4-dimethoxy-6-methylbenzene-1,3-diol (8), benzocamphorin A (9), benzocamphorin D (10), 2,2閳?5,5閳?tetramethoxy-3,4,3閳?4閳?bi-methylenedioxy-6,6閳?dimethylbiphenyl (11), and 4,7-dimethoxy-5-methyl-1,3-benzodioxole (12), were isolated from the fruiting body of Antrodia camphorata (Polyporaceae). These compounds were characterized and identified by phys. and spectral evidences. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Synthetic Route of C9H10O4).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) 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. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Synthetic Route of C9H10O4

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