Product Categories
| Country: | China |
|---|---|
| Tel: | +86-18922120635 |
| Mobile: | +86-18922120635 |
| E-mail: | sales@toref-standards.com |
| QQ: | |
| Skype: | Chat Now! |
| Address: | Room 1201, Room 1203, 181 Science Avenue, Huangpu District, 510663 |
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Established in 1999, Guangzhou Tosun Pharmaceutical Limited is a Pharmaceutical company based in Guangzhou, China, and specialized in providing Pharmaceutical Reference Standards, API Impurities, Reference Listed Drugs (RLDs), Intermediates, Excipients etc. We supply products to pharmaceutical, and biotech companies as well as R&D labs at various research institutes and organizations.
? We respond to our client’s inquiries within 24 hrs.
? We ship In-stock products in 24 hrs.
? Tosun offers custom synthesis of the products which are new or not in our stock.
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| Product Name | MF | CAS | Details |
|---|
| Alfuzosin Impurity R(Mixture) | Details |
| Ixaconazole side chain intermediate 4 | Details |
| Retinoic Acid Impurity F | C21H30O3 | 81121-20-2 | Details |
| Roxithromycin EP Impurity B | C33H62N2O12 | 214902-82-6 | Details |
| Lornoxicam Impurity 10 | C6H6ClNO4S2 | 70374-36-6 | Details |
| Diquafosol Impurity-URD | C9H12N2O6 | 58-96-8 | Details |
| Cefoperazone Impurity M | Details |
| Landiolol Hydrochloride EnantiomerⅠ | C25H40ClN3O8 | 1253907-83-3 | Details |
| Oxcarbazepine EP Impurity A;Carbamazepine | C15H12N2O | 298-46-4 | Details |
| Amlodipine EP Impurity G | C17H18ClNO4 | 43067-01-2 | Details |
| Roxadustat Impurity 35 | C20H20N2O4 | 1509958-19-3 | Details |
| Cefdinir Impurity S | C16H15N5O6S2 | 127770-93-8 | Details |
| Diquafosol Impurity 4 | C9H17N2NaO18P4 | 1402828-42-5 | Details |
| Carvedilol Impurity 19 | C23H24N2O4 | 72956-44-6 | Details |
| Emedastine EP Impurity E | C16H24N4O | 101954-20-5 | Details |
| Diquafosol Impurity-DIU | C7H16N2O | 4128-37-4 | Details |
| Hydrazinoadenosine impurity 2（Regardsone impurity 22） | C10H15N7O4 | 15763-11-8 | Details |
| Crisaborole Impurity 65 | Details |
| Cefditoren Pivoxil Impurity 19 | Details |
| (S)-Carvedilol | C24H26N2O4 | 95094-00-1 | Details |
| Posazonazole Intermediate POA | C21H21F2N3O4S | 149809-43-8 | Details |
| Sulpride Impurity G | C14H21N3O4S | 67381-52-6 | Details |
| Nintedanib Impurity D | C30H25N3O3 | 334950-70-8 | Details |
| Procaterol Impurity 4 | C16H20N2O3 | 63235-39-2 | Details |
| Timolol EP Impurity D | C6H9N3O2S | 30165-97-0 | Details |
| Lenvatinib Impurity LFS-I | C35H26Cl2N6O7 | 2143930-75-8 | Details |
| Crisaborole Impurity 4 | Details |
| Propafenone EP Impurity C | C18H18O3 | 22525-95-7 | Details |
| Sulpiride impurity 11 | C8H8O6S | 34556-95-1 | Details |
| Timolol Impurity 12 | Details |
| Lifitegrast Impurity 53 | Details |
| Moxifloxacin Impurity A（Moxifloxacin hydrochloride EP impurity A） | C20H21F2N3O3 | 151213-15-9 | Details |
| Piperacillin Ring Opening Ethyl Ester | Details |
| Torasemide EP impurity C | C15H18N4O3S | 58155-35-4 | Details |
| Carvedilol Impurity 4 | C17H15NO4 | 26646-63-9 | Details |
| Ilaprazole Intermediate 2 | C11H9N3S | 172152-53-3 | Details |
| Lenvatinib Impurity LFS-H | C17H14ClN3O3 | 417722-93-1 | Details |
| Lanatoside C (Digoxin Impurity H) | C49H76O20 | 17575-22-3 | Details |
| Lysine impurity 23 | C8H16N2O3 | 692-04-6 | Details |
| Cefdinir Impurity A | C5H6N4O2S | 1450758-21-0 | Details |
| Pranoprofen Impurity 31 | C14H11NO2 | 53944-29-9 | Details |
| Landiolol Hydrochloride EnantiomerⅡ | C25H40ClN3O8 | 1253907-85-5 | Details |
| Cefditoren Pivoxil Impurity 17 | C19H18N6O5S3 | 145904-68-3 | Details |
| Cefoperazone Impurity 24 | Details |
| Urosodeoxycholic Acid EP Impurity K | C24H40O4 | 566-24-5 | Details |
| (R)-Propafenone | C21H27NO3 | 107381-31-7 | Details |
| N-Methylpyrrolidine Impurity 1 | Details |
| Oxcarbazepine EP Impurity F | C16H12ClNO2 | 28721-08-6 | Details |
| Nintedanib Impurity C | Details |
| Nintedanib Impurity E | C11H13NO4 | 91133-96-9 | Details |
| D-Isomaltose | C12H22O11 | 499-40-1 | Details |
| Roxithromycin EP Impurity F | C40H74N2O15 | 118267-18-8 | Details |
| Tralostatin | C20H27NO3 | 13647-35-3 | Details |
| Latamoxef Impurity C | Details |
| Bupivacaine EP Impurity A (Ropivacaine Impurity 32) | C14H14N2O | 39627-98-0 | Details |
| L-2-Chloro phenylalanine | C9H10ClNO2 | 103616-89-3 | Details |
| Pregabalin impurity B (3-isobutyl glutaric acid) | C9H16O4 | 75143-89-4 | Details |
| Oxcarbazepine EP Impurity B | C16H14N2O2 | 28721-09-7 | Details |
| Moxifloxacin Impurity X | C20H24FN3O2 | 1322062-57-6 | Details |
| Carvedilol Impurity 2 | C18H17NO3 | 1198090-71-9 | Details |
| Famotidine | C8H15N7O2S3 | 76824-35-6 | Details |
| Lysine impurity 7 | C10H18N2O4 | 35436-74-9 | Details |
| rac-Dexrazoxane | C11H16N4O4 | 21416-67-1 | Details |
| Oxacillin sodium EP Impurity I | Details |
| Lifitegrast Impurity 52 | C25H28Cl2N2O7S | 2762168-17-0 | Details |
| Hydroxyasiaticoside | C48H78O20 | 34540-22-2 | Details |
| Acitretin Acid Impurity B | C23H30O3 | 54350-48-0 | Details |
| Prilocaine EP Impurity F | C12H18N2O | 42459-45-0 | Details |
| Cefdinir Impurity TU | C13H15N5O4S2 | 178949-04-7 | Details |
| Epalrestat | C15H13NO3S2 | 82159-09-9 | Details |
| Ilaprazole Impurity 14 | 018229-53-2 | Details |
| Buvacaine N-Oxide | C18H28N2O2 | 1346597-81-6 | Details |
| Prilocaine EP Impurity E | C13H20N2O | 744961-76-0 | Details |
| Crisaborole Impurity 11 | C14H12BNO4 | 1187188-59-5 | Details |
| Oxacillin sodium EP Impurity B | Details |
| Asiaticoside | C48H78O19 | 16830-15-2 | Details |
| (S)-Propafenone | C21H27NO3 | 107381-32-8 | Details |
| Moxifloxacin Impurity F（Moxifloxacin hydrochloride EP impurity F） | 72197-37-2 | Details |
| Ilaprazole sulfone | Details |
| Prilocaine EP Impurity G | C12H18N2O | 145133-92-2 | Details |
| Clindamycin Phosphate EP Impurity C | C18H34ClN2O8PS | 28708-34-1 | Details |
| Isomalt | C12H24O11 | 534-73-6 | Details |
| Ilaprazole Impurity 10 | C19H18N4OS | 172152-35-1 | Details |
| Dabigatran Impurity 4 | Details |
| Timolol EP Impurity G | C6H9N3O3S | 75202-36-7 | Details |
| (R)-Carvedilol | C24H26N2O4 | 95093-99-5 | Details |
| Torasemide EP impurity A | C13H11N3O3S | 72810-61-8 | Details |
| Mexiletine Impurity 11 | C11H16O2 | 61102-09-8 | Details |
| Sulpride Impurity E | C8H10N2O4S | 52395-25-2 | Details |
| (R)-Tenofovir | C9H14N5O4P | 147127-20-6 | Details |
| Carvedilol Impurity 17 | C9H12O3 | 18181-71-0 | Details |
| Doxazosin EP Impurity F | C10H10ClN3O2 | 23680-84-4 | Details |
| Lornoxicam Impurity 8 | C5H3ClO5S2 | 187746-94-7 | Details |
| Piperacillin EP Impurity P | Details |
| Emedastine Impurity 3 | Details |
| Sulpride Impurity F | Details |
| Torsemide Related Compound 1 | C13H13N3O2S | 947327-54-0 | Details |
| Asiaticoside B | C48H78O20 | 125265-68-1 | Details |
| Crisaborole Impurity 8 | Details |
| Dexamethasone Impurity 35 | C22H31FO5 | 55879-48-6 | Details |
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