英语词汇“methyl radical”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

C1. General attributive and appositive, esp. in methyl group, methyl radical.

ΚΠ

1844 G. Fownes Man. Elem. Chem. Index Methyle-compounds.

1861 Jrnl. Chem. Soc. 13 323 In exceptional cases only have I worked in the methyl-series.

1883 Science 23 Feb. 75/1 By heating xanthine-silver [i.e. the silver compound of xanthine] with methyl iodide, a methyl group was introduced.

1899 T. C. Allbutt et al. Syst. Med. VIII. 577 [Cacodylic acid] is a combination of arsenic with methyl radicals.

1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) xl. 598 Codeine..is a methyl derivative of morphine.

1926 J. Read Text-bk. Org. Chem. xi. 203 By replacing six hydrogen atoms in the molecule of the magenta dye, pararosaniline, with six methyl groups,..is produced.

1951 Jrnl. Biol. Chem. 189 203 Methionine is the methyl donor for the methylation of both nicotinamide and guanidoacetic acid.

1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xxiv. 306 Salicylic Acid, 1 : 2 C₆H₄(OH)COOH, occurs naturally in the form of its methyl ester, which is the main constituent of oil of wintergreen.

1962 J. T. Marsh Self-smoothing Fabrics xviii. 300 Free methyl radicals might possibly react with the quinoid group..and produce a methoxyl group which would destroy the chromophoric structure.

1965 J. R. Dyer Applic. Absorption Spectroscopy Org. Compounds iv. 66 Under higher resolution the peaks of ethyl alcohol..attributed to methylene and methyl protons appear as multiplets.

1967 Experientia 23 793/1 We..wish to report the isolation of picene and chrysene, along with evidence that methyl homologs of these are also present.

1985 P. J. Wingate Before Bridge xx. 200 Then he gave me the job of learning how to insert an angular methyl group into the napthalene molecule.

1991 Economist 13 July 105/2 One way to turn genes off is to plaster molecules called methyl groups all over the DNA from which the gene is made.

2000 Biochem. Jrnl. 346 475 Methionine adenosyltransferase is an essential cellular enzyme which catalyses the formation of S-adenosylmethionine, the principal methyl donor and precursor for polyamines.

单词	methyl radical
释义	> as lemmas methyl radical C1. General attributive and appositive, esp. in methyl group, methyl radical. ΚΠ 1844 G. Fownes Man. Elem. Chem. Index Methyle-compounds. 1861 Jrnl. Chem. Soc. 13 323 In exceptional cases only have I worked in the methyl-series. 1883 Science 23 Feb. 75/1 By heating xanthine-silver [i.e. the silver compound of xanthine] with methyl iodide, a methyl group was introduced. 1899 T. C. Allbutt et al. Syst. Med. VIII. 577 [Cacodylic acid] is a combination of arsenic with methyl radicals. 1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) xl. 598 Codeine..is a methyl derivative of morphine. 1926 J. Read Text-bk. Org. Chem. xi. 203 By replacing six hydrogen atoms in the molecule of the magenta dye, pararosaniline, with six methyl groups,..is produced. 1951 Jrnl. Biol. Chem. 189 203 Methionine is the methyl donor for the methylation of both nicotinamide and guanidoacetic acid. 1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xxiv. 306 Salicylic Acid, 1 : 2 C₆H₄(OH)COOH, occurs naturally in the form of its methyl ester, which is the main constituent of oil of wintergreen. 1962 J. T. Marsh Self-smoothing Fabrics xviii. 300 Free methyl radicals might possibly react with the quinoid group..and produce a methoxyl group which would destroy the chromophoric structure. 1965 J. R. Dyer Applic. Absorption Spectroscopy Org. Compounds iv. 66 Under higher resolution the peaks of ethyl alcohol..attributed to methylene and methyl protons appear as multiplets. 1967 Experientia 23 793/1 We..wish to report the isolation of picene and chrysene, along with evidence that methyl homologs of these are also present. 1985 P. J. Wingate Before Bridge xx. 200 Then he gave me the job of learning how to insert an angular methyl group into the napthalene molecule. 1991 Economist 13 July 105/2 One way to turn genes off is to plaster molecules called methyl groups all over the DNA from which the gene is made. 2000 Biochem. Jrnl. 346 475 Methionine adenosyltransferase is an essential cellular enzyme which catalyses the formation of S-adenosylmethionine, the principal methyl donor and precursor for polyamines. extracted from methyln. < as lemmas
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> as lemmas