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Country: | China |
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Tel: | +86-18922120635 |
Mobile: | +86-18922120635 |
E-mail: | sales@toref-standards.com |
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Skype: | Chat Now! |
Address: | Room 1201, Room 1203, 181 Science Avenue, Huangpu District, 510663 |
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 |
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Furosemide impurity 5 | C7H5Cl2NO4S | 62971-57-7 | Details |
Minoxidil Impurity F | C4H6N4O | 100643-27-4 | Details |
Procaterol Impurity 11 | C10H7NO3 | 68304-21-2 | Details |
Diquafosol Impurity B | C9H15N2O15P3 | 63-39-8 | Details |
Amoxicillin EP Impurity C | C16H19N3O5S | 94659-47-9 | Details |
Ilutinib impurity 10 | C27H30N6O3 | 1022150-11-3 | Details |
Valsartan Impurity 46 | C23H29NO4 | 1012341-54-6 | Details |
Benzalkonium chloride | C17H30ClN | 8001-54-5 | Details |
Antipyrine Impurity 3 | C11H11N3O2 | 885-11-0 | Details |
Etofenamate EP Impurity C | C13H10F3N | 101-23-5 | Details |
Pregabalin Impurity 45 | C8H15NO | 61312-87-6 | Details |
Dabigatran Acyl-β-D-Glucuronide | C31H33N7O9 | 1015167-40-4 | Details |
Ampicillin EP Impurity I | C24H26N4O5S | 10001-82-8 | Details |
Dienogest Impurity E | C22H31NO3 | 102193-41-9 | Details |
Tetracaine Impurity 6 | C11H16N2O2 | 10012-47-2 | Details |
Ibuprofen Impurity 60 | C18H27ClO2 | 89878-75-1 | Details |
Rosuvastatin EP Impurity L Calcium Salt | C22H30FN3O6S | 1024064-70-7 | Details |
Clarithromycin EP Impurity D | C37H67NO13 | 101666-68-6 | Details |
5,7-dimethyl-6-(3-(trifluoromethyl)phenoxy)-2,3-dihydro-1H-1,4-diazepine | C14H15F3N2O | 1024297-62-8 | Details |
Losartan EP Impurity J | C24H25ClN6O2 | 1006062-27-6 | Details |
Famotidine EP Impurity C HCl | C8H15ClN6O3S3 | 76824-17-4 | Details |
Drotaverine Impurity 2 | C12H19NO2 | 61381-04-2 | Details |
Triamterene EP Impurity A | C4H6N6O | 1006-23-1 | Details |
Ethanol | C2H6O | 64-17-5 | Details |
Benzophenone | C11H14O | 1009-14-9 | Details |
Procaterol Impurity 8 | C16H23ClN2O3 | 62910-96-7 | Details |
Disulfide chloride | Cl2S2 | 10025-67-9 | Details |
Famotidine EP Impurity I | C8H14N6O4S3 | 1020719-36-1 | Details |
Fusidic Acid EP Impurity M | C31H48O5 | 1013937-16-0 | Details |
Glipizide EP Impurity H(Trelagliptin EP Impurity H) | C15H23N3O3S | 10080-05-4 | Details |
Bromhexine Impurity D | C14H21BrN2 | 10076-98-9 | Details |
Rosuvastatin Impurity 114 | C29H40FN3O6S | 1007871-85-3 | Details |
Ceftizoxime Impurity 3 | C13H13N5O6S2 | 79226-66-7 | Details |
Moxifloxacin impurity 103 | C5H10N2O | 100-75-4 | Details |
Loratadine EP Impurity D(Desloratadine) | C19H19ClN2 | 100643-71-8 | Details |
1-[2-[5-Methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidinecarbothioamide | C13H17F3N4OS | 1003319-95-6 | Details |
Ambroxol Impurity 7 | C13H20BrClN2O | 101900-44-1 | Details |
Levodopa EP Impurity A | C9H11NO5 | 27244-64-0 | Details |
Fluvastatin EP Impurity G | C18H16FNO | 101125-34-2 | Details |
Macitentan Impurity 29(Benzyl alcohol) | C7H8O | 100-51-6 | Details |
4 - hydroxy-1 - (3 - pyridyl) - 1 - butanone | C9H11NO2 | 59578-62-0 | Details |
Famotidine Impurity 29 | C9H15N7S2 | 1009828-88-9 | Details |
1,4-Diisopropylbenzene | C12H18 | 100-18-5 | Details |
Methotrexate impurity 29 | C4H7N5 | 1004-38-2 | Details |
Aceclofenac EP Impurity F | C23H19Cl2NO4 | 100499-89-6 | Details |
Salmeterol EP Impurity D | C34H47NO7 | 1391052-04-2 | Details |
Olaparib Impurity 4 | C16H10FN3O | 1021298-68-9 | Details |
Drotaverine Impurity 1 | C12H16O4 | 38464-04-9 | Details |
Milnacipran Hydrochloride | C15H23ClN2O | 101152-94-7 | Details |
Drotaverine Impurity 7 | C22H28ClNO4 | 85472-87-2 | Details |
Ciprofloxacin HCl Monohydrate | C17H21ClFN3O4 | 86393-32-0 | Details |
Lacosamide EP Impurity J | C7H9N | 100-46-9 | Details |
Pirfenidone EP Impurity B | C6H7NO | 1003-68-5 | Details |
Chenodeoxycholic Acid Impurity 4 | C48H76N2O8 | 1024498-33-6 | Details |
Metronidazole EP Impurity G | C6H7N3O4 | 1010-93-1 | Details |
Loxoprofen Impurity 30 | C10H11ClO2 | 80530-55-8 | Details |
Pramipexole Impurity K | C10H17N3OS | 1001648-71-0 | Details |
Allopurinol EP Impurity B | C5H6N4O2 | 22407-20-1 | Details |
Paroxetine EP Impurity G HCl | C12H15ClFN | 1012886-75-7 | Details |
Brimonidine EP Impurity A | C11H11N5 | 91147-43-2 | Details |
Naltrexone EP Impurity A | C17H17NO5 | 1007856-83-8 | Details |
boric acid | BH3O3 | 10043-35-3 | Details |
Rebamipide Impurity 1 | C18H15ClN2O2 | 100342-53-8 | Details |
Valsartan Impurity45 (Sacubitril impurity 45) | C23H29NO4 | 1012341-52-4 | Details |
Ibuprofen EP Impurity R | C22H30 | 102120-87-6 | Details |
P-methoxybenzoic acid | C8H8O3 | 100-09-4 | Details |
Hydrobromic acid | BrH | 10035-10-6 | Details |
Betahistine EP Impurity A | C7H7N | 100-69-6 | Details |
azelaic acid | C9H16O4 | 123-99-9 | Details |
Glucosamine Impurity 7 | C5H5NO | 1003-29-8 | Details |
Diquafosol Impurity-UP4 | C9H16N2O18P4 | 10003-94-8 | Details |
Disodium edetate/Ceftriaxone Impurity 21 | C10H19N2NaO9 | 6381-92-6 | Details |
Acarbose EP Impurity A | C25H43NO18 | 1013621-79-8 | Details |
Nimesulide EP impurity G | C12H9NO4 | 70995-08-3 | Details |
Paliperidone Impurity 10 | C11H14N2O2 | 1008796-23-3 | Details |
Levofloxacin EP Impurity F | C13H9F2NO4 | 100986-89-8 | Details |
Cetirizine EP Impurity B(HCl) | C19H22Cl2N2O2 | 1000690-91-4 | Details |
Fusidic Acid EP Impurity G | C31H46O6 | 4680-37-9 | Details |
Tigecycline EP Impurity C(Minocycline) | C23H27N3O7 | 10118-90-8 | Details |
Sodium picosulfate | C18H13NO8S2.2Na | 10040-45-6 | Details |
Sodium Thiosulfate Pentahydrate | H10Na2O8S2 | 10102-17-7 | Details |
Nicardipine Impurity 44 | C10H15NO | 101-98-4 | Details |
Vancomycin EP Impurity D | C59H62Cl2N8O22 | 101485-50-1 | Details |
Glipizide EP Impurity I(Trelagliptin EP Impurity I) | C22H34N4O4S | 10079-35-3 | Details |
Ipilimumab impurity 2 | C12H13F2NO | 1016743-93-3 | Details |
P-methoxybenzoyl chloride | C8H7ClO2 | 100-07-2 | Details |
Levofloxacin EP Impurity A | C18H20FN3O4 | 100986-86-5 | Details |
Edaravone impurity 3 (phenylhydrazine) | C6H8N2 | 100-63-0 | Details |
Terbinafine EP Impurity E HCl | C36H40N2 | 934365-23-8 | Details |
Treprostinil Impurity 2 | C22H34O3 | 101692-01-7 | Details |
Rifabutin EP Impurity E | C44H60N4O10 | 100324-63-8 | Details |
6-bromo-7-methoxy-4 (3H) - quinazolinone | C9H7BrN2O2 | 950577-05-6 | Details |
Sitagliptin EP Impurity C | C16H16F5N5O | 945261-48-3 | Details |
Glycolic acid | C2H4O3 | 79-14-1 | Details |
Magnesium sulfate heptahydrate | Mg.O4S.7H2O | 10034-99-8 | Details |
Nicotinamide EP Impurity B(3-Cyanopyridine) | C6H4N2 | 100-54-9 | Details |
Palmitic acid ethyl ester | C18H36O2 | 628-97-7 | Details |
Metoclopramide Impurity 33 | C13H20ClN3O2 | 101385-94-8 | Details |
N. N '- carbonyl bis (N-methylacetamide) | C7H12N2O3 | 102107-09-5 | Details |
Pyridoxine hydrochloride EP impurity A | C8H10ClNO2 | 1006-21-9 | Details |
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