Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate CAS NO.106939-34-8

shanghai topchem co., ltdis an integrated high-tech enterprise composed with production ,r&d and trading, specialized in quinolones api and intermediates, veterinary drugs and supply cmo service

for customers. topchem has several large –sized manufacturing sites located in industrial zone, with total area of 150000 square meters. one of them is gmp certificated manufacturer. the workshops

are strictly compliance with gmp standard. topchem own a medical research institute located in shandong province, which is a qualified specialist in formulation and api process development. the

institute is organized by an enormous experts group with medicine professors, synthesis professors and clinic professors, they focus on new drugs development and transfer, drug registration

application ,clinic service and chemical cmo service .currently topchem is the largest supplier for tetrachlorophthalic anhydride (tcpa) with annual capacity 6000mt. moxifloxacin hydrochloride,

polyinosinic acid, polycytidysic acid, etizolam, trelagliptin succinate, ticagrelor is the major apis, sarafloxacin hydrochloride , diclazuril ,toltrazuril is the major veterinary drugs.

topchem sincerely welcome friends from home and aboard to visit us, discuss the cooperation with us. welcome to work with us together in the production, r&d, technical services and trading

1.good servie, high quality with competitive price 2.fast and safe delivery 3.we have clients throughout the world 4.exported areas:eurpore, southeast asia and the middle east, south america and

some other countries and areas 5.have our own r&d group.