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Theophylline EP Impurity B. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 3-methyl-1H-purine-2,6(3H,7H)-dione. CAS No. 1076-22-8. Molecular formula: C6H6N4O2. Mole weight: 166.14. Catalog: APB1076228.
2-Hydroxyethyl 4-methylbenzenesulfonate
An impurity of Dyphylline which is a xanthine derivative used to relieve breathing problems caused by bronchial asthma, chronic bronchitis, or emphysema. Synonyms: 2-hydroxyethyl tosylate; ethylene glycol monotosylate; 2-(4-Toluenesulfonyloxy)ethanol; 2-hydroxyethyl p-toluenesulfonate; Theophylline Impurity 9. CAS No. 42772-85-0. Molecular formula: C9H12O4S. Mole weight: 216.26.
7-butyl-1,3-dimethylpurine-2,6-dione
Doxofylline Impurity 13 is a Doxofylline impurity. Doxofylline is a phosphodiesterase inhibitor and a xanthine derivative drug for asthma. Synonyms: 7-Butyltheophylline; Theophylline,7-butyl-; UNII-N2R6WU63DY; BRN0250158. Grade: 95%. CAS No. 1021-65-4. Molecular formula: C11H16N4O2. Mole weight: 236.27.
Doxofylline Impurity 10
Doxofylline Impurity 10 is a Doxofylline impurity. Doxofylline is a phosphodiesterase inhibitor and a xanthine derivative drug for asthma. Synonyms: ethyl 7-theophyllineacetate; (1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-purin-7-yl)-acetic acid ethyl ester. CAS No. 7029-96-1. Molecular formula: C11H14N4O4. Mole weight: 266.25.
Doxofylline Impurity 2
Doxofylline Impurity 2 (Theophylline Impurity 2) is a Doxofylline impurity. Doxofylline is a phosphodiesterase inhibitor and a xanthine derivative drug for asthma. Synonyms: Theophylline Impurity 1; 1,2,3,6-Tetrahydro-1,3-dimethyl-2,6-dioxopurine-7-acetaldehyde; 7-(Formylmethyl)theophylline; 7-Theophyllineacetaldehyde. Grade: > 95%. CAS No. 5614-53-9. Molecular formula: C9H10N4O3. Mole weight: 222.20.
Doxofylline Impurity 9
Doxofylline Impurity 9 is a Doxofylline impurity. Doxofylline is a phosphodiesterase inhibitor and a xanthine derivative drug for asthma. Synonyms: 7-(2',2'-Diethoxyethyl)theophylline1111. CAS No. 43135-57-5. Molecular formula: C13H20N4O4. Mole weight: 296.32.
Theobromine
Pharmaceutical Secondary Standard; Certified Reference Material. Group: Pharmaceutical impuritiesfood additives, flavours & adulterantsapi standardseuropean pharmacopoeia (ph. eur.)impurity standardspharmaceutical toxicologypharmacopoeial standards. Alternative Names: Pentoxifylline Imp. A (EP), Theobromine, Theophylline-Ethylenediamine Anhydrous Imp. G (EP),Caffeine Imp. D (EP), Theophylline-Ethylenediamine Imp. G (EP).
7-(2-Cyanoethyl)-theophylline is one of Caffeine impurities. Caffeine is a CNS stimulant. Alkaloid, purified from plants of Coffea genus, Rubiaceae. Synonyms: 1,2,3,6-Tetrahydro-1,3-dimethyl-2,6-dioxo-7H-purine-7-propanenitrile; 3-(1,3-Dimethyl-2,6-dioxo-1,2,3,6-tetrahydropurin-7-yl)propanenitrile; 1,3-dimethyl-7H-xanthine-7-propanenitrile; 7-Cyanoethyltheophylline; 7H-Purine-7-propanenitrile,1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo. Grade: 98%. CAS No. 1811-38-7. Molecular formula: C10H11N5O2. Mole weight: 233.23.
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