Ethyl Trifluorocrotonate-3(13C) is the labeled version of Ethyl trans-4,4,4-Trifluorocro (E930455), which is an intermediate used in the synthesis of various pharmaceutically active molecules and agricultural products. It can also be used in the synthesis of novel amino trifluoromethyl cyclopropane carboxylic acid derivatives in the presence of nucleophilic reagents. Molecular Formula: C213C4H7F3O2 Molecular Weight: 172.08