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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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Lidocaine EP Impurity H | C10H12ClNO | 1131-01-7 | Details |
(R) - 2-methylproline | C6H11NO2 | 63399-77-9 | Details |
Labetalol Impurity 6(Amphetamine) | C10H15N | 22374-89-6 | Details |
Clprofloxacin Hydrochloride | C17H18FN3O3.HCl | 93107-08-5 | Details |
Olaparib | C24H23FN4O3 | 763113-22-0 | Details |
Methanesulfonate Isopropyl | C4H10O3S | 926-06-7 | Details |
N-Hydroxysuccinimide | C4H5NO3 | 6066-82-6 | Details |
Amikacin EP Impurity I | C4H9NO3 | 40371-51-5 | Details |
Hydroxyacetone | C3H6O2 | 116-09-6 | Details |
Puerarin | C21H20O9 | 3681-99-0 | Details |
Sodium tetrasulfate | H5NaO7S4 | 13721-29-4 | Details |
Allopurinol | C5H4N4O | 315-30-0 | Details |
Diphenylphosphinic acid | C12H11O2P | 1707-03-5 | Details |
Aspirin EP Impurity E | C14H10O5 | 552-94-3 | Details |
Dimethyl adipate | C8H14O4 | 627-93-0 | Details |
Cimetidine Impurity 2 | C4H5N3S | 26364-65-8 | Details |
Isoniazid EP Impurity A | C6H5NO2 | 55-22-1 | Details |
Mesalazine | C7H7NO3 | 89-57-6 | Details |
MetocloprDmide EP Impurity E | C6H16N2 | 100-36-7 | Details |
Molnupiravir Impurity 1 | C9H13N3O6 | 3258-02-4 | Details |
Diquafosol Impurity-UMP | C9H14N2NaO9P | 3387-36-8 | Details |
2,4-Dimethylimidazole | C5H8N2 | 930-62-1 | Details |
Etomidate Impurity 9 | C6H8N2O2 | 23785-21-9 | Details |
Ibuprofen EP Impurity B | C13H18O2 | 3585-49-7 | Details |
Rasagiline Impurity 10 | C9H11N | 34698-41-4 | Details |
Amikacin EP Impurity D | C18H36N4O11 | 59-01-8 | Details |
Ursodeoxycholic Acid EP Impurity F | C24H38O4 | 4651-67-6 | Details |
Phenyl Chloroformate | C7H5ClO2 | 1885-14-9 | Details |
Capecitabine EP Impurity G | C19H26FN3O8 | 162204-20-8 | Details |
Relugolix Impurity 4 | C4H4ClN3 | 5469-69-2 | Details |
Ibuprofen EP Impurity E | C12H16O | 38861-78-8 | Details |
Isavuconazole | C22H17F2N5OS | 241479-67-4 | Details |
Z-D-Arg(Pbf)-OH·CHA | C33H49N5O7S | 200191-00-0 | Details |
Pregabalin EP Impurity C | C8H8O3 | 90-64-2 | Details |
Posazonazole Intermediate 1 | C16H19N3O | 74853-08-0 | Details |
Boc-L-Glutamic acid | C10H17NO6 | 2419-94-5 | Details |
P-Chloroacetoanilide | C8H8ClNO | 539-03-7 | Details |
Loxoprofen Impurity 28 | C10H11BrO2 | 111128-12-2 | Details |
Dinitolmide | C8H7N3O5 | 148-01-6 | Details |
Isavuconazole Impurity 33(Crotonaldehyde) | C4H6O | 123-73-9 | Details |
Pregabalin Impurity 53 | C9H17NO3 | 181289-15-6 | Details |
Dopamine EP Impurity B | C9H13NO2 | 554-52-9 | Details |
Methanesulfonate Methyl | C2H6O3S | 66-27-3 | Details |
Cimetidine | C10H16N6S | 51481-61-9 | Details |
Lidocaine Dichloro Impurity | C10H11Cl2NO | 39084-88-3 | Details |
Methanesulfonate Ethyl | C3H8O3S | 62-50-0 | Details |
Dopamine EP Impurity C | C10H15NO2 | 120-20-7 | Details |
Dapoxetine Hydrochloride | C21H23NO | 119356-77-3 | Details |
Losoprofen Sodium | C15H19NaO3 | 80382-23-6 | Details |
Digoxin EP Impurity A | C41H64O13 | 71-63-6 | Details |
DL-α-Tocopherol | C29H50O2 | 10191-41-0 | Details |
Rivaroxaban Impurity RC-28 | C5H3ClO2S | 59337-89-2 | Details |
MetocloprBmide EP Impurity B | C11H12ClNO4 | 4093-31-6 | Details |
Methyl acetylsalicylate | C10H10O4 | 16475-90-4 | Details |
Pregabalin Impurity 32 | C8H11N | 3886-69-9 | Details |
3-Chloro-4-morphlino-1,2,5-thiadiazole | C6H8ClN3OS | 30165-96-9 | Details |
Mesalamine EP Impurity A | C6H7NO | 123-30-8 | Details |
Capecitabine Intermediate 2 | C11H16O7 | 62211-93-2 | Details |
Cyanocobalamin Impurity 13 | C62H90ClCoN13O15P | 13422-51-0 | Details |
Phenacetin | C10H13NO2 | 62-44-2 | Details |
2,4,5-Trimethylaniline Hydrochloride | C9H14ClN | 21436-97-5 | Details |
1,2-Dimethylimidazol | C5H8N2 | 1739-84-0 | Details |
Chloroacetyl Chloride | C2H2Cl2O | 79-04-9 | Details |
Prilocaine EP Impurity B HCl | C7H10ClN | 636-21-5 | Details |
Pentoxifylline EP Impurity B | C6H6N4O2 | 1076-22-8 | Details |
Norfloxacin EP Impurity A | C12H9ClFNO3 | 68077-26-9 | Details |
O-Benzenedicarboxylicacid Dioctylester | C24H38O4 | 117-84-0 | Details |
Capecitabine Intermediate 1 | C4H4FN3O | 2022-85-7 | Details |
Lansoprazole Impurity 21 | C7H8N2O3 | 37699-43-7 | Details |
Mesalazine EP Impurity K | C6H7N | 62-53-3 | Details |
Progesterone Impurity 28 | C21H28O3 | 2243-08-5 | Details |
Trichlorethanol | C2H3Cl3O | 115-20-8 | Details |
N-Cyano-N',S-dimethylisothiourea | C4H7N3S | 5848-24-8 | Details |
Sulfadimethoxine EP Impurity A | C6H9N3O2 | 3289-50-7 | Details |
Fumaric acid monomethyl ester | C5H6O4 | 2756-87-8 | Details |
p-Toluenesulfonate Ethyl ester | C9H12O3S | 80-40-0 | Details |
Caffeine EP impurity D | C7H8N4O2 | 83-67-0 | Details |
Trifluoroethylamine | C2H4F3N | 753-90-2 | Details |
4-Amino-3-fluorphenol | C6H6FNO | 399-95-1 | Details |
Acetylcysteine isomer impurity | C5H9NO3S | 26117-28-2 | Details |
Capecitabine EP Impurity C | C13H16FN3O6 | 161599-46-8 | Details |
Olaparib Impurity 7 | C9H18N2O2 | 57260-71-6 | Details |
Loxoprofen | C15H18O3 | 68767-14-6 | Details |
Mesalazine EP Impurity P | C13H11NO6S | 887256-40-8 | Details |
Azacitidine Impurity 1 | C3H5N5O | 645-92-1 | Details |
Urosodeoxycholic Acid Impurity 11 | C26H43NO6 | 475-31-0 | Details |
Fenofibrate EP Impurity B | C17H15ClO4 | 42017-89-0 | Details |
Glycyrrhetic Acid (Enoxolone) | C30H46O4 | 471-53-4 | Details |
2-Aminobenzenethiol | C6H7NS | 137-07-5 | Details |
(S)-(-)-2-(Boc-amino)-1,5-pentanediol | C10H21NO4 | 162955-48-8 | Details |
N,N'-Dimethylarginine | C8H18N4O2 | 30344-00-4 | Details |
Hydrochlorothiazide Impurity B | C6H8ClN3O4S2 | 121-30-2 | Details |
Dinitolmide Impurity A | C8H7NO4 | 1975-52-6 | Details |
Minoxidil EP Impurity B | C4H5ClN4 | 156-83-2 | Details |
Chlorphenamine EP Impurity B | C10H9N3 | 1202-34-2 | Details |
Lansoprazole Impurity 23 | C7H9NO | 22710-07-2 | Details |
Laurocapram | C18H35NO | 59227-89-3 | Details |
MetocloprCmide EP Impurity C | C8H8ClNO3 | 7206-70-4 | Details |
Sodium metabisulfite | H2O5S2.2Na | 7681-57-4 | Details |
Dimethylsulfate | C2H6O4S | 77-78-1 | Details |
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