Refers to a chemical reaction that does not involve the use of a catalyst to speed up the reaction.
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5,6-dihydrochorismic acid
1-methyl-2,4-cyclohexadiencarbonsaeure
methyl (1R*,2S*)-2-acetyl-4-cyclohexen-1-ylcarboxylate
(+/-)-(Z)-9-methylchorismic acid
