normustine normustine normustine, also known as bis(2-chloroethyl)carbamic acid, is a nitrogen mustard and alkylating antineoplastic agent (i.e., chemotherapy agent). it is a metabolite of a number of antineoplastic agents that have been developed for the treatment of tumors, including estramustine phosphate, alestramustine, cytestrol acetate, and ici-85966 (stilbostat), but only the former of which has actually been marketed. normustineclinical dataother namesbis(2-chloroethyl)carbamic acididentifiers iupac name bis(2-chloroethyl)carbamic acid cas number78619-95-1pubchem cid18377863uniiq2kpx8th4kchemical and physical dataformulac5h9cl2no2molar mass186.03 g·mol−13d model (jsmol)interactive image smiles c(ccl)n(cccl)c(=o)o inchi inchi=1s/c5h9cl2no2/c6-1-3-8(4-2-7)5(9)10/h1-4h2,(h,9,10)key:ttyaktjqjvvked-uhfffaoysa-n