On the basis of our previous observation that W-alkyl substituted chlorpropamide derivatives when administered to rats nonenzymatically eliminated n-propyl isocyanate, a known inhibitor of aldehyde dehydrogenase (AlDH), we have synthesized other latentiated n-propyl isocyanates as in vivo inhibitors of AlDH. W-Allylchlorpropamide 3 was, as expected, a potent inhibitor of hepatic AlDH in rats, as indicated by the 4-fold increase in the levels of ...