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Cato Research Chemicals Inc.??? ?? ??? ?????.

?? ?:Cato Research Chemicals Inc.
??:020-81960175
???:tianwen.zhan@cato-chem.com
??:China
URL: www.cato-chem.com/
? ?? ?:7734
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LCZ-696 Impurity 7 calcium saltLCZ696???B766480-48-2C24H29NO5
Paracetamol EP Impurity K4-?????123-30-8C6H7NO
Tedizolid Impurity 301220910-90-6C34H30F2N12O11P2
Amlodipine Besylate EP Impurity H2-???????????318465-73-5C28H29ClN2O8
Sibutramine Impurity 4p-????? ?????140-53-4C8H6ClN
Perindopril EP Impurity F129970-98-5C19H30N2O4
Rabeprazole EP Impurity I???????N-????924663-37-6C18H21N3O5S
Ornidazole Impurity 916773-51-6C7H9N3O3
Cefaclor EP Impurity B53994-69-7C7H7ClN2O3S
Felodipine EP impurity C????B79925-38-5C19H21Cl2NO4
Levofloxacin Impurity 329-?????-9-(4-??-1-?????)??????1329833-82-0C23H31N5O4
Ipratropium Bromide EP Impurity F60018-35-1C20H28BrNO2
Dapoxetine Impurity 19(R)-α-[2-(1-???????)??]-?????156453-53-1C19H18O2
Entecavir EP Impurity D(1'S,3'S,4'S)-????????1367369-80-9C12H15N5O3
Clarithromycin EP Impurity GClarithroMycin???G127182-44-9C39H72N2O13
Vildagliptin Impurity 25702-82-9C10H17NO
Thioctic Acid Impurity 925636-58-2C8H14O2S
Amiodarone EP Impurity E52490-15-0C19H18O3
Empagliflozin Impurity 382125472-55-9C23H25ClO8
Tofacitinib Impurity 21092578-48-7C16H20N6O
Aciclovir EP Impurity LN2,9-???????3056-33-5C9H9N5O3
Propranolol Impurity 52007-72-9C16H21NO2
Desloratadine Impurity 9?37370117796-52-8C21H21ClN2O
Thioctic Acid Impurity 12????????916746-61-7C12H23NO4S2
Sertraline EP Impurity A（RS Monomer）(1R,4S)????????79896-32-5C17H18Cl3N
Glutathione EP Impurity A19246-18-5C5H10N2O3S
Azithromycin EP Impurity A???????76801-85-9C37H70N2O12
Valsartan Impurity 14??N-???-N-[(2'-??????-4-?)??]-L-?????137863-90-2C25H30N2O3
Valsartan Impurity 8????????137862-78-3C25H31N5O3
Vecuronium Bromide EP Impurity E17-????????50587-95-6C32H55BrN2O3
Oseltamivir EP Impurity C (HCl)1415963-60-8C14H25ClN2O4
Indapamide Impurity 222-?????6872-06-6C9H11N
Adrenalin-Methylether HCl74571-90-7C10H16ClNO3
Methylprednisolone EP Impurity G93269-35-3C22H28O4
Cimetidine EP Impurity B138035-55-9C10H15N5OS
Empagliflozin Impurity 1061620758-21-5C32H37ClO12
Pioglitazone EP Impurity C?????????952188-00-0C28H31N3O3S
Progesterone Impurity 174-PREGNEN-3,6,20-???2243-08-5C21H28O3
Diclofenac EP Impurity D127792-23-8C14H11BrClNO2
Metoprolol EP Impurity D3-[4-(2-?????)???]-62572-90-1C12H18O4
Sodium Valproate EP Impurity F2430-27-5C8H17NO
Telmisartan EP Impurity A152628-02-9C19H20N4
Lipoic acid impurity 117370-41-1C8H14O4S2
Metronidazole EP Impurity A2-??-4-???????696-23-1C4H5N3O2
Metaraminol Impurity 2721480-43-3C9H13NO2
Hydrochlorothiazide EP Impurity A???????58-94-6C7H6ClN3O4S2
Timolol EP Impurity D4-????-4-YL-1,2,5-?????-3-OL30165-97-0C6H9N3O2S
Metoprolol Impurity 191,3-??[4-(2-?????)???]-230975-30-1C21H28O5
Cetirizine EP Impurity C83881-59-8C21H25ClN2O3
Tadalafil EP Impurity Bent-????629652-72-8C22H19N3O4
Paracetamol EP Impurity A2-????????614-80-2C8H9NO2
Ofloxacin EP Impurity B??????????123155-82-8C17H20FN3O2
Paroxetine EP Impurity I HCl220548-73-2C12H17ClFNO
Cetirizine EP Impurity E????,2-[2-[2-[4-[(4-?????)????]-1-?????]???]???]-]682323-77-9C23H29ClN2O4
Clindamycin Phosphas EP Impurity FLincoMycin2-???27480-30-4C18H35N2O9PS
Neostigmine Impurity 34312-54-3C10H17NO5S
Budesonide EP Impurity C16α,17-[(1RS)-Butylidenebis(oxy)]-11β-hydroxy-17-(hydroxyMethyl)-D-hoMoandrosta-1,4-diene-3,17a-dione(DiastereoMers????)1040085-99-1C25H34O6
Erythromycin A iminoether（Azithromycin CP Impurity Q）???????A6,9-??????99290-97-8C37H66N2O12
Tiotropium Bromide EP Impurity C136310-95-7C19H22BrNO3S2
Emedastine EP Impurity C122423-32-9C15H22N4O
Valsartan Impurity 91111177-30-0C26H33N5O3
Hydroxychloroquine EP Impurity E4-[(7-???-4-????)???]-1-???10500-64-8C14H17ClN2O
Ipratropium Impurity 223979-14-4C11H14O3
Promethazine EP Impurity C HClracN-???????????60113-77-1C16H19ClN2S
Metoprolol EP Impurity M343785-33-1C9H22N2O
Hydroxychloroquine EP Impurity A1449223-88-4C18H26ClN3O2
Travoprost 15-EPi Diastereomer1420791-14-5C26H35F3O6
Formoterol EP Impurity F (Mixture of Diastereomers)1795129-59-7C37H46N4O6
LCZ-696 Impurity 9 calcium saltLCZ696???C149709-63-7C24H29NO5
Diclofenac EP Impurity B2-(2,6-????????)??????22121-58-0C13H9Cl2NO
Empagliflozin Impurity 772137418-13-2C23H27ClO8
Prilocaine EP Impurity A2-???-N-(2-????)??????19281-31-3C10H12ClNO
Tedizolid Impurity 371239662-48-6C17H17FN6O9P2
Azithromycin EP Impurity H2-(2H-??????-2-?)-p-???612069-30-4C45H77N3O15S
Propofol Impurity 2183237-15-4C17H26O4
Rabeprazole EP Impurity E4-?????????-4-????????102804-77-3C15H15N3O2S
Defluoro Levofloxacin（Levofloxacin EP Impurity D）???????????117620-85-6C18H21N3O4
Budesonide EP Impurity I113930-13-5C25H34O7
Nimodipine EP Impurity C?????????B(50MG)(BIS(2-METHOXYETHYL)2,6-DIMETHYL-4-(3-NITROPHE-NYL)-1,4-DIHYDROPYRIDINE-3,5-DICARBOXYLATE)(AS)70172-96-2C21H26N2O8
Epinastine Impurity 13 HCl9-??????????141342-69-0C16H14ClN3O
Tranexamic Acid EP Impurity A???-???-4,4'-????????(??????????)93940-19-3C16H27NO4
Sildenafil EP Impurity F (N-Desmethyl Sildenafil)????????139755-82-1C21H28N6O4S
Clopidogrel Impurity 8?? ???141-79-7C6H10O
Amlodipine Impurity 30496024-43-2C20H22ClNO5
Timolol EP Impurity G75202-36-7C6H9N3O3S
Lenvatini417716-92-8C21H19ClN4O4
Voriconazole EP Impurity A;Fluconazole EP Impurity E2,4-?????-??-(1H-1,2,4-?????)?????86404-63-9C10H7F2N3O
Amisulpride EP Impurity A26116-12-1C7H16N2
Duloxetine EP Impurity D1-???90-15-3C10H8O
Rosuvastatin EP Impurity D503610-43-3C22H26FN3O5S
Irbesartan Impurity 5152708-24-2C14H11N7
Verapamil Impurity 273,4-???????????7306-46-9C9H11ClO2
Doxofylline Impurity 1842772-85-0C9H12O4S
Rabeprazole EP Impurity H(Lansoprazole EP Impurity F)4-?????????-4-????????168167-42-8C14H12ClN3OS
Tadalafil EP Impurity A??-????171596-27-3C22H19N3O4
Donepezil Impurity 7RAC(CIS/TRANS)????N-???120013-84-5C24H29NO4
Tofacitinib Impurity 31092578-47-6C16H20N6O
Letrozole EP Impurity B4,4',4"-?????????????113402-31-6C22H13N3
Azithromycin EP Impurity G3'-N-DesMethyl-3'-N-tosyl???????612069-31-5C44H76N2O14S
Procaterol Hydrochloride Hemihydrate81262-93-3C16H25ClN2O4
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