0-15-00-00477 (Beilstein Handbook Reference) 1-Formyl-2-(4-nitrophenyl)hydrazine 6632-39-9 BRN 0643569 FORMIC ACID, 2-(p-NITROPHENYL)HYDRAZIDE Hydrazinecarboxaldehyde, 2-(4-nitrophenyl)- NSC 57665