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

pyroguaiacin n.

Brit.

/ˌpʌɪrə(ʊ)ˈɡwʌɪəsɪn/

U.S.

/ˌpaɪroʊˈɡwaɪəs(ə)n/

[after German Pyroguajacin (E. Ebermayer 1854, in Jrnl. f. prakt. Chem. 62 291)] a crystalline, bicyclic organic compound obtained by the destructive distillation of guaiacum resin.Pyroguaiacin is a lignan, 2,3-dimethyl-6-hydroxy-7-methoxynaphthalene; C₁₃H₁₄O₂.

ΚΠ

1854 Chem. Gaz. 12 386 It is probably the same substance obtained by Ebermayer, and called by him pyroguaiacine.

1858 H. Watts tr. L. Gmelin Hand-bk. Chem. XII. 350 Caustic ammonia colours pyroguaiacin yellow.

1913 Thorpe's Dict. Appl. Chem. (ed. 2) IV. 565/2 Pyroguaiacin condenses towards the close of the distillation in pearly crystals.

1955 Chem. Rev. 55 963 The structure of pyroguaiacin was proposed from analytical data, from its conversion to guaia[c]ene by distillation with zinc dust, and from its oxidation to the corresponding naphthoquinone.

单词	pyroguaiacin
释义	> as lemmas pyroguaiacin pyroguaiacin n. Brit. /ˌpʌɪrə(ʊ)ˈɡwʌɪəsɪn/ , U.S. /ˌpaɪroʊˈɡwaɪəs(ə)n/ [after German Pyroguajacin (E. Ebermayer 1854, in Jrnl. f. prakt. Chem. 62 291)] a crystalline, bicyclic organic compound obtained by the destructive distillation of guaiacum resin.Pyroguaiacin is a lignan, 2,3-dimethyl-6-hydroxy-7-methoxynaphthalene; C₁₃H₁₄O₂. ΚΠ 1854 Chem. Gaz. 12 386 It is probably the same substance obtained by Ebermayer, and called by him pyroguaiacine. 1858 H. Watts tr. L. Gmelin Hand-bk. Chem. XII. 350 Caustic ammonia colours pyroguaiacin yellow. 1913 Thorpe's Dict. Appl. Chem. (ed. 2) IV. 565/2 Pyroguaiacin condenses towards the close of the distillation in pearly crystals. 1955 Chem. Rev. 55 963 The structure of pyroguaiacin was proposed from analytical data, from its conversion to guaia[c]ene by distillation with zinc dust, and from its oxidation to the corresponding naphthoquinone. extracted from pyro-comb. form < as lemmas
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> as lemmas