单词 | pyrocinchonic acid |
释义 | pyrocinchonic acidnoun py·ro·cinchonic acid ¦pī(ˌ)rō+…- : an unstable dicarboxylic acid C4H6(COOH)2 obtained usually in the form of its crystalline anhydride by pyrolysis of cinchonic acid; dimethyl-maleic acid |
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