Categories Articles Barbituric acid Post author By forendex.southernforensic CSA Names: Barbituric acid CSA Location: Schedule III Section (c) Subsection (3) DEA code 2100 CSA History: 38 FR 31310 replacement for “[Reserved]” effective 13 Nov 1973 Names: Pyrimidine-2,4,6(1H,3H,5H)-trione (IUPAC) Molecular formula: C4H4N2O3 Nominal mass: 128 Average mass: 128.0862 Monoisotopic mass: 128.022192 CAS registry number: 117491-80-2 ChemSpider: 5976 PubChem: 6211 Wikipedia: Barbituric acid Erowid: Barbiturates Drugs-Forum: Bluelight: Standard InChI: InChI=1S/C4H4N2O3/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9) Standard InChI key: HNYOPLTXPVRDBG-UHFFFAOYSA-N SMILES: O=C1CC(=O)NC(=O)N1 Tags: USCSA ← 17β-Hydroxy-androstano[2,3-/d]isoxazole → 5-Androstenediol-17-benzoate