Theophylline

This classification denotes a bronchodilator and alkaloid with the molecular formula C7H8N4O2.H2O, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier C137DTR5RG, chemically known as 3,7-dihydro-1,3-dimethyl-1h-purine-2,6-dione but generally known as theophylline, which bears US NIH Compound Identifier 2153. European Medicines Agency schedules Theophylline in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB15516MIG. World Health Organization schedules theophylline in its Anatomical Therapeutic Chemical (ATC) Classification. THEOPHYLLINE is scheduled in the U.S. International Trade Commission's Harmonized Tariff System (HTS) Pharmaceutical Appendix. As of Q4 2014, THEOPHYLLINE remains the US FDA Preferred Term for this commodity. Theophylline bears US NLM identifiers UMLS ID C0039771 and NCI Concept Code C872. SMILES: O=C1N(C(=O)N(C2NC[NH]C12)C)C.