(4-Nitrophenyl)carbamic acid 3-pyridinylmethyl ester 3-Pyridylmethyl N-4'-nitrophenyl carbamate 5-21-02-00176 (Beilstein Handbook Reference) 51594-83-3 BRN 1490077 CARBAMIC ACID, (4-NITROPHENYL)-, 3-PYRIDINYLMETHYL ESTER N-4'-Nitrophenyl-3-pyridinylmethylcarbamate RH 945