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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/
? ?? ?:7765
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Posaconazole Impurity 491902954-05-5C37H42F2N8O5
Paracetamol EP Impurity L2514961-29-4C16H16N2O4
Indacaterol Impurity 21?????IMrity1235445-80-3C24H28N2O3
(S)-2-amino-5-((S)-3-amino-3-carboxypropanamido)pentanoic Trifluoroacetic Acid2135301-50-5C9H17N3O5
Omadacycline Tosylate???????(?????)1075240-43-5C36H48N4O10S
Propofol EP Impurity P2095678-97-8C16H24O3
Fluvoxamine EP Impurity E???????????1217214-94-2C15H22F2N2O2
Tolvaptan Impurity 261580889-25-3C26H25ClN2O3
Tafluprost Impurity 91563176-58-8C25H34F2O5
Pirfenidone Impurity 132251047-36-4C18H16N2O2
Metoprolol EP Impurity C（HCl）1956321-87-1C13H20ClNO3
Levofloxacin EP Impurity B HCl2254176-11-7C17H19ClFN3O4
Raltitrexed Impurity 11378372-01-0C10H10N2O2
Promethazine Sulfoxide N-Oxide HCl1135334-50-7C17H20N2O2S
Dapoxetine Impurity 142242008-38-2C30H32ClNO2
Flurbiprofen EP Impurity B (Mixture of Diastereomers)1797883-74-9C18H17FO4
Phenylephrine EP Impurity D1367567-95-0C16H19NO2
Valsartan Impurity 10114772-54-2C14H10BrN
Valsartan EP Impurity A137862-87-4C24H29N5O3
Vortioxetine Hydrobromide960203-27-4C18H23BrN2S
Topiroxostat577778-58-6C13H8N6
Tedizolid Phosphate????????856867-55-5C17H16FN6O6P
Solifenacin EP Impurity H HCl(1S,3S)-????????180468-38-6C23H27ClN2O2
Solifenacin EP impurity I?????N-???180272-28-0C23H26N2O3
Azithromycin EP Impurity C620169-47-3C37H70N2O12
Valsartan Impurity 56 HCl482577-59-3C20H23ClN2O2
Valsartan Impurity 70149690-13-1C20H26ClNO2
Edoxaban Impurity 36 (1S,2R,4S)EthanediaMide???D480452-36-6C21H30ClN5O5
Linezolid Impurity 79N-(3-?????-2-(R)-???????)-3-????-4-(?????)???874340-08-6C21H22FN3O4
Moxifloxacin EP Impurity A151213-15-9C20H21F2N3O3
Tenofovir?????147127-20-6C9H14N5O4P
Valsartan impurity 5676129-92-3C19H21N5O2
Valsartan Impurity 34151052-40-3C14H10N4O
Valsartan Impurity 304'-(??????)-[1,1'-???]-2-??????209911-63-7C14H9Br2N
Tenofovir Alafenamide Hemifumarate1392275-56-7C25H33N6O9P
Tenofovir Alafenamide Impurity 31422343-76-7C21H29N6O7P
Tenofovir Alafenamide Impurity 52055343-42-3C21H29N6O7P
Tenofovir alafenamide1948248-12-1C25H33N6O9P
Cis-Octahydropyrrolo[3,4-b]Pyridine??-????????[3,4-b]???147459-51-6C7H14N2
Progesterone EP Impurity L2257421-80-8C22H30O2
Loxoprofen Impurity 322514697-36-8C15H18O5
Bupivacaine Impurity 152717331-30-9C15H21ClN2O
Perospirone Impurity 201002359-81-0
Naloxone Hydrochloride EP Impurity F2139253-69-1C19H21NO5
Lacosamide EP Impurity I(R-Isomer)2295925-90-3C19H23N3O3
Peramivir Impurity 102597901-48-7C15H27N3O5
Cefpodoxime Proxetil Impurity 81192365-87-9C25H33N5O11S2
Propranolol Impurity 131236367-67-1C26H26O5
Upadacitinib??????1310726-60-3C17H19F3N6O
Fmoc-D-Leu-OH114360-54-2C21H23NO4
Fmoc-D-Isoleucine143688-83-9C21H23NO4
Fmoc-D-Arg (Pbf)-OH187618-60-6C34H40N4O7S
Fmoc-D-Tyr(tBu)-OH118488-18-9C28H29NO5
Fmoc-D-Trp(Boc)-OH163619-04-3C31H30N2O6
Clarithromycin EP Impurity A124412-58-4C38H69NO14
Clarithromycin EP Impurity M127182-43-8C37H68N2O13
N-Nitroso Bumetanide2490432-02-3C17H19N3O6S
Baricitinib Impurity N162402776-80-9C17H20N6O4S
Verapamil EP Impurity P2086275-13-8C29H38N2O4
Rivastigmine USP RC F3-??????(??)-?????1346602-84-3C12H15NO2
Valsartan EP Impurity C????n-???952652-79-8C23H27N5O3
Valsartan Impurity 29124750-51-2C33H25BrN4
Losartan EP Impurity B2'-[(1H-????-5-?)???-4-?]???160514-13-6C14H12N4O
Valsartan EP Impurity BN-[2'-(1H-????-5-?)???-4-???]-N-???-(L)-????????137863-20-8C31H35N5O3
Valsartan Impurity 17 ( Losartan EP Impurity E )5-[2-(4'-?????)]????120568-11-8C14H12N4
Valsartan USP Related Compound EN-[2'-(1H-????-5-?)???-4-???]-N-???-(L)-????????137863-17-3C25H31N5O3
Solifenacin EP impurity F HCl(1R,3S-)???????????????180468-40-0C23H27ClN2O2
Solifenacin Succinate242478-38-2C27H32N2O6
Saxagliptin Hydrate????????945667-22-1C18H27N3O3
Mosapride Impurity 8112885-33-3C21H26ClN3O3
Pitavastatin Impurity 213-(?????)-2-???????-4-(4'-??????)???154057-56-4C19H15BrFN
Paroxetine Related Compound F(3S,4R)-3-[(1,3-?????-5-???)??]-4-(4-??????)-1-??????110429-36-2C20H22FNO3
Tranexamic Acid EP Impurity C HCl1803601-44-6C8H14ClNO2
Ritonavir EP Impurity FDes(?????????)?????????1010809-61-6C29H34N4O5S
Ritonavir EP Impurity O1414933-81-5C37H48N6O5S2
Paliperidone Impurity 1 （Mixture of Tautomeric Isomers）9-???????1189516-65-1C23H25FN4O3
Nicardipine Impurity 82469735-68-8C15H15NO5
Nicardipine Impurity 52469555-30-2C15H17NO6
Progesterone EP Impurity G2257421-79-5C27H38O2
Mirtazapine EP Impurity D????????????1188265-41-9C16H18ClN3
Vonoprazan Fumarate Impurity 331H-??-3-???,5-(2-??????)-881674-58-4C11H10FNO
Vonoprazan Fumarate Impurity 31H-??-3-???????,5-(2-??????)-881674-56-2C11H8FNO
Vardenafil Impurity 9448184-48-3C23H32N6O5S
Vardenafil EP Impurity B437717-43-6C17H20N4O5S
Desulfovardenafil224789-21-3C17H20N4O2
Paracetamol EP Impurity O2575516-61-7C16H16N2O4
Ziprasidone EP Impurity B1159977-56-6C21H19ClN4O2S
Rocuronium EP Impurity D3-???-17-??????????????1190105-63-5C32H53BrN2O4
Rocuronium EP Impurity E2-?????????????????????1190105-65-7C32H53BrN2O3
Rocuronium EP Impurity H1190105-67-9C32H49BrN2O4
Quetiapine EP Impurity H?????N-????1076199-40-0C21H25N3O3S
Montelukast Dicyclohexylamine Salt???????????????577953-88-9C47H59ClN2O3S
Montelukast EP Impurity A220927-27-5C35H36ClNO3S
Rupatadine Fumaric Acid182349-12-8C26H26ClN3.C4H4O4
Vonoprazan Fumarate Impurity 5881677-11-8C16H11FN2O3S
Vonoprazan Fumarate Impurity 40881676-90-0C16H12N2O3S
Gadoxetate Disodium?????????135326-22-6C23H28GdN3NaO11-
(R)-(2-Methylpyrrolidin-2-yl)methanol1523530-30-4C6H14ClNO
(2,6-Difluoro-4-(4-morpholinyl)phenyl)boronicacid1093878-46-6C10H12BF2NO3
Triamcinolone Acetonide EP Impurity B14,15-?????????????????1260149-96-9C24H29FO6
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