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

protoporphyrin

/ˌprəʊtə(ʊ)ˈpɔːf(ɪ)rɪn/

Chemistry

noun

Any of a group of fifteen isomeric porphyrins having the formula C₃₄H₃₄N₄O₄, in which the porphin nucleus has four methyl, two vinyl, and two propionic acid substituents; especially (more fully protoporphyrin IX) the isomer which occurs widely in living organisms, mainly as haem (in which it is bonded to an iron atom).

Origin

1920s; earliest use found in Chemical Abstracts. From proto- + porphyrin, after German Protoporphyrin.

单词	protoporphyrin
释义	protoporphyrin /ˌprəʊtə(ʊ)ˈpɔːf(ɪ)rɪn/ Chemistry noun Any of a group of fifteen isomeric porphyrins having the formula C₃₄H₃₄N₄O₄, in which the porphin nucleus has four methyl, two vinyl, and two propionic acid substituents; especially (more fully protoporphyrin IX) the isomer which occurs widely in living organisms, mainly as haem (in which it is bonded to an iron atom). Origin 1920s; earliest use found in Chemical Abstracts. From proto- + porphyrin, after German Protoporphyrin.
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