49787-00-0
4,N-二羟基苯甲酰胺
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20260-53-1
烟酰氯盐酸盐
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40678-80-6
4-(5-pyridin-3-yl-1,2,4-oxadiazol-3-ylidene)cyclohexa-2,5-dien-1-one