4-Nitro-1H-pyrazole-3-carboxylic Acid Price Not Available 5mg 4-Nitro-1H-pyrazole-3-carboxylic Acid Supplier Page Catalog Number R021660 Molecular Formula C4H3N3O4 CAS# 5334-40-7 Purity ≥95% Inchi InChI=1S/C4H3N3O4/c8-4(9)3-2(7(10)11)1-5-6-3/h1H,(H,5,6)(H,8,9) Inchi Key ZMAXXOYJWZZQBK-UHFFFAOYSA-N SMILES C1=NNC(=C1[N+](=O)[O-])C(=O)O Size 5mg Supplier Page https://www.musechem.com/product/R021660.html