Figure 1. Chemical structures of carisoprodol and meprobamate.
Carisoprodol and meprobamate are propanediol dicarbamates. Carisoprodol was synthesized by replacing a hydrogen on a carbamyl nitrogen of meprobamate with an isopropyl group. Chemical structures were obtained from PubChem, an online resource made available through the United States National Library of Medicine (http://pubchem.ncbi.nlm.nih.gov.).