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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Theophylline, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Theophylline impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Theophylline-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Theophylline Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
8-Chlorotheophylline-d6 Stable Isotopes CS-T-71843 1346598-95-5 Enquire
Theophylline-1,3 15N2,13C Stable Isotopes CS-T-61987 1246816-25-0 Enquire
Theophylline-1,3-15N2-2-13C Stable Isotopes CS-T-87211 84718-95-6 Enquire
Theophylline-13C2d6 Stable Isotopes CS-T-86708 1782458-84-7 Enquire
Theophylline-d6 Stable Isotopes CS-O-07003 117490-39-8 In Stock


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Theophylline API Standards CS-O-30795 58-55-9 In Stock
Theophylline Ethylenediamine API Standards CS-O-05355 317-34-0 Enquire
Theophylline Hydrochloride API Standards CS-P-00172 58-55-9 (free base) Enquire
Theophylline Hydrochloride Monohydrate API Standards CS-EO-03898 1604876-32-5 Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
7-(-ß-Hydroxypropyl)theophylline Metabolites CS-T-56415 603-00-9 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,3-Dimethyl-8-phenyl-7H-purine-2,6-dione Impurities CS-ZJ-09078 961-45-5 In Stock
3-Methyl-1H-Purine-2,6(3H,7H)-Dione Impurities CS-M-58323 1076-22-8 In Stock
7-(2-Chloro ethyl)-8-Benzyl Theophylline Impurities CS-EO-03219 81781-90-0 Enquire
7-(2-Cyanoethyl)-theophylline Impurities CS-T-90423 1811-38-7 Enquire
7-Ethyl Theophylline Impurities CS-T-23209 23043-88-1 In Stock
Acephylline Impurities CS-O-07108 652-37-9 In Stock
Doxofylline Impurity 2 Impurities CS-P-00962 5614-53-9 In Stock
N7-Nitroso Theophylline Impurities CS-O-40705 Not Available Enquire
N9-Nitroso Theophylline Impurities CS-EO-02146 Not Available Enquire
Theophylline Related Compound D Impurities CS-O-48709 116131-08-9 (HCl salt) In Stock


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"8-[6-Methyl-furo[3,40c]pyridin-7-yloxy]theophylline" Intermediates CS-T-81297 1797911-12-6 Enquire
7-(2-Chloroethyl)theophylline Intermediates CS-EL-07661 5878-61-5 Enquire
7-(3-((2-(3,4-Dihydroxyphenyl)-2-hydroxyethyl)amino)propyl)-... Intermediates CS-O-48505 62402-01-1 Enquire
8(-p-Sulfophenyl)theophylline Intermediates CS-T-86990 80206-91-3 Enquire
8-Chlorotheophylline Intermediates CS-T-12672 85-18-7 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,3-diTheophylline -2-Propanol Fine Chemicals CS-O-37509 39726-70-0 Enquire
8-Bromotheophylline Fine Chemicals CS-T-08990 10381-75-6 Enquire
Theophylline Sodium Glycinate Fine Chemicals CS-ED-00517 8000-10-0 In Stock