5-甲酸乙酯四氮唑英文名称:Ethyl tetrazole-5-carboxylateCAS号:55408-10-1分子式:C4H6N4O2分子量:142.122,4-二甲基-5-醛基-1H-吡咯-3-羧酸英文名称:5-Formyl-2,4-dimethyl-1H-pyrrole-3-carboxylic acidCAS号:253870-02-9分子式:C8H9NO3分子量:167.16