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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/
? ?? ?:7735
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Indacaterol Impurity 138-?????-2-??-1,2-?????-5-??????????68304-21-2C10H7NO3
Progesterone EP Impurity M (17-alpha-Progesterone)(17α)-???-4-?-3,20-??2000-66-0C21H30O2
Azithromycin EP Impurity J????????????117693-41-1C30H58N2O9
Indometacin EP Impurity C4-???-N-(4-?????)????4018-82-0C14H12ClNO2
Irbesartan Impurity 6133690-91-2C25H28N6O
Levocetirizine Impurity 294-(?????)-1-????????????????108983-83-1C19H26Cl2N2O
Dexpanthenol Impurity 11H-??-ALA-??-ALA-OH2140-53-6C6H12N2O3
Fudosteine Impurity 21 (Mixture of Diastereomers)L-???,3-[(3-????????)???]-209665-22-5C6H13NO4S
Budesonide EP Impurity D21-???????????85234-63-5C25H32O6
Felodipine EP Impurity B????3,5-???????91189-59-2C17H17Cl2NO4
Rivaroxaban EP Impurity E1415566-28-7C19H19N3O5S
Cefdinir CP Impurity S127770-93-8C16H15N5O6S2
Lansoprazole EP Impurity D(Rabeprazole EP Impurity K)2-??????????615-16-7C7H6N2O
Fluticasone Propionate CP Impurity X1648562-63-3C26H33F3O5S
Progesterone EP Impurity C145-15-3C21H32O2
Thiamine nitrate EP Impurity E299-35-4C12H16N4OS2
Fluticasone Propionate EP Impurity E105613-90-9C25H33F3O5S
Methotrexate EP Impurity K(Folic Acid EP Impurity A)4271-30-1C12H14N2O5
Olmesartan Impurity 73??????????172875-98-8C24H24N6O2
Trans-Abacavir Dihydrochloride???-????????267668-71-3C14H19ClN6O
Linagliptin Impurity 71446263-38-2C25H28N8O2
LCZ-696 Impurity 8 calcium saltahu377????2761373-05-1C24H29NO5
Levothyroxine EP Impurity H3,5-DIIODO-4′-(4-HYDROXYPHENOXY)???2055-97-2C13H6I4O4
Salbutamol EP Impurity B2066??96948-64-0C12H19NO2
Posaconazole Impurity 14927871-49-4C4H8O3
Ibuprofen EP Impurity E?????????38861-78-8C12H16O
Dutasteride EP Impurity A104239-97-6C19H27NO3
Azithromycin EP Impurity L90503-06-3C38H72N2O13
Salbutamol Impurity 28??????????F(30mg)(??-[{(1,1-?????)???}??}-4-(?????)-1,3-??????)174607-68-2C20H27NO3
Tofacitinib Impurity 71616761-00-2C16H19ClN6O
Levocarnitine EP Impurity C Chloride?????????6490-20-6C7H17ClN2O2
Oseltamivir EP Impurity A HCl1391047-93-0C14H24N2O4
Cefdinir CP Impurity A1450758-21-0C5H6N4O2S
Rivaroxaban Impurity 32438056-69-0C10H12N2O2
Dopamine Impurity 23645-33-0C9H14ClNO2
Tranexamic Acid EP Impurity F1599413-49-6C9H15NO3
Lysine Impurity 15L-(-)-???? ???????3184-13-2C5H13ClN2O2
Metoprolol EP Impurity HO-?????????62572-94-5C14H23NO3
Metoprolol EP Impurity AC-?????????109632-08-8C14H23NO3
Metoprolol Related Compound B56718-76-4C12H17ClO3
Chlorphenamine EP Impurity Aα,α-??[2-(??????)??]-1246816-57-8C16H24ClN3
Celecoxib Impurity 91061214-06-9C15H17N3O2S
Thiamine Nitrate EP Impurity A2380-61-2C12H16N4O4S2
Prilocaine Impurity 6 (Lidocaine Impurity 16)?????.A(EP):(RS)-2-???-N-(2-????)-??????39084-88-3C10H11Cl2NO
Methylprednisolone EP Impurity C1β-?????-6α-??-1,4-???????-3,17-??61919-52-6C20H26O3
Pantoprazole EP Impurity F?????EP???F721924-06-7C17H17F2N3O4S
Apixaban Impurity 55??(2E)-???[(4-?????)??????]????27143-09-5C10H10Cl2N2O2
Choline fenofibrate EP Impurity E????????????42019-08-9C19H19ClO4
Clarithromycin EP Impurity J(Roxithromycin EP Impurity C)???????A??111321-02-9C37H68N2O13
Dapagliflozin Impurity 17???103-73-1C8H10O
Desloratadine Impurity 17?????????N-????169253-26-3C19H19ClN2O
Allopurinol EP Impurity B5-(MylaMino???)-1H-???-4-??????22407-20-1C5H6N4O2
Rocuronium EP Impurity B3-????????????122483-73-2C34H55BrN2O5
Lacosamide EP Impurity K86921-49-5C12H14N2O2
Miconazole EP Impurity D24168-96-5C18H15Cl4N3O4
Bupivacaine EP Impurity C1797894-80-4C14H17NO
Rac-Adrenaline EP Impurity F (Epinephrine Sulfonic Acid)(+/-)-????????26405-77-6C9H13NO5S
Indapamide EP Impurity B63968-75-2C16H14ClN3O3S
Promethazine EP Impurity B HCl??????????5568-90-1C17H21ClN2S
Omeprazole EP Impurity F125656-82-8C16H13N3O2S
Amoxicillin EP impurity BL-?????26889-93-0C16H19N3O5S
Pregabalin Impurity 124-????,3-(?????)-5-??-216576-74-8C8H15NO2
Lidocaine Impurity 13?????? ?????79-04-9C2H2Cl2O
Levocetirizine Impurity 24????3-?????????1232460-29-5C21H26Cl2N2O3
Tadalafil EP Impurity C??-??-????171596-28-4C22H19N3O4
Atorvastatin Impurity 112??????????459-57-4C7H5FO
（R)-Etomidate EP Impurity B??(R)-1-(1-????)-1H-????-5-???????61045-91-8C13H14N2O2
Formoterol EP Impurity I (Enantiomer Mixture)532414-36-1C19H24N2O4
Apixaban Impurity 392206825-87-6C25H27N5O5
Adrenaline EP Impurity D317351-40-9C16H19NO3
Bromfenac Impurity 1991713-91-6C15H10BrNO2
Thioctic acid Impurity 31,2-????-3-???1-????6992-30-9C8H14O3S2
Tryptophan EP Impurity EN'-???-L-????3978-11-8C11H12N2O4
Ritonavir EP Impurity H??(?????????)????-???????????1010809-43-4C30H32N4O6S
Metoclopramide EP Impurity FMetoclopraMide???F38339-95-6C13H20ClN3O2
Azithromycin EP Impurity K612534-95-9C38H70N2O13
Olopatadine Impurity 455690-15-8C18H18O5
Tedizolid Impurity 422095200-69-2C16H18FN6O5P
Amiodarone EP Impurity C1397201-93-2C25H31ClINO3
Clopidogrel EP Impurity A HCl???????????A(20MG)((S)-(O-?????)-6,7-????????[3,2-C]??-??-5(4H)-????,???)144750-42-5C15H14ClNO2S.ClH
Cimetidine EP Impurity D DiHCl????????IMPD59660-24-1C9H17N5S.2ClH
Quetiapine EP Impurity S329216-63-9C21H25N3O3S
Atorvastatin EP Impurity D????????????D(20mg)(????????,or3-(4-Fluorobenzoyl)-2-isobutyryl-3-phenyl-oxirane-2-??????????)148146-51-4C26H22FNO4
Metoprolol EP Impurity E163685-38-9C15H25NO3
Allopurinol EP Impurity E31055-19-3C7H9N3O3
Azithromycin EP Impurity N3'-Des(diMethylaMino)-3'-?????????612069-25-7C36H65NO13
Clarithromycin EP Impurity E6,11-?-O-?????????81103-14-2C39H71NO13
Thiamine nitrate EP Impurity C??????C7275-24-3C12H17Cl3N4S
Empagliflozin Impurity 51620758-33-9C23H27ClO7
Vonoprazan Impurity 662170020-79-6C21H20FN3O6S
Vitamin B5 Impurity 5897045-90-8C12H22N2O6
Ornidazole Impurity 241348117-98-5C7H10ClN3O3
Piracetam EP Impurity C??2-??????-1-?????61516-73-2C8H13NO3
Bepotastine Impurity 4210095-58-2C21H25ClN2O7
Amlodipine Besylate EP Impurity E???????????140171-65-9C21H27ClN2O5
Diacerein EP Impurity F???????F13928-72-8C35H36O16
Fluticasone Propionate EP Impurity F11-??????????????1219174-94-3C25H29F3O5S
Empagliflozin Impurity 141620758-34-0C23H29ClO8
methyl 2-(4-(2-chloroethyl)phenyl)-2-methylpropanoate1181267-33-3C13H17ClO2
Vildagliptin Impurity 871789703-37-2C17H25N3O2
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