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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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Ursodeoxycholic Acid EP Impurity H78919-26-3C24H40O4
D-SorbitolD-???98201-93-5C6H14O6
Valproic Acid Methyl Ester2-?????????????22632-59-3C9H18O2
Perindopril Related Compound B???????95153-31-4C17H28N2O5
Progesterone EP Impurity I3-??????-4-?-20-??????24254-01-1C22H32O2
Tizanidine EP Impurity E30536-19-7C6H4ClN3S
Risperidone EP Impurity L63234-80-0C11H15ClN2O
Butafosfan17316-67-5C7H18NO2P
Celecoxib Impurity 21 HCl17852-52-7C6H10ClN3O2S
Erythromycin EP Impurity A16-???????????82230-93-1C37H67NO14
α-(4-Biphenylyl)Benzylamine??-(4-????)????91487-88-6C19H17N
Timolol EP Impurity B(Mixture of Enantiomers)59697-06-2C13H24N4O3S
Salbutamol EP Impurity C??????????B(20mg)(??-[{(1,1-?????)???}??]-4-????-3-??-?????)18910-68-4C13H21NO2
Venlafaxine EP Impurity F HCl93413-79-7C17H26ClNO
Propafenone Hydrochloride34183-22-7C21H28ClNO3
Pyrazinamide Impurity 22-??????19847-12-2C5H3N3
Cimetidine EP Impurity I4-???????-5-??????29636-87-1C5H8N2O
Cefazolin EP Impurity E(Cefazolin USP RC E)5-??-1,3,4-?????-2-??29490-19-5C3H4N2S2
Fenofibrate Impurity 1261002-27-5C17H16O5
N-Methyl-perfluorohexane-1-sulfonamide (>90%)????????-N-?????????68259-15-4C7H4F13NO2S
Phenylephrine EP Impurity E HCl??(3-????????)??????????71786-67-9C16H18ClNO2
Salbutamol EP Impurity I56796-66-8C20H27NO3
(S)-3-Amino-piperidine-2-one Hydrochloride(S)-3-???????-2-?34294-79-6C5H10N2O
Roxatidine Acetate Hydrochloride????????????93793-83-0C19H29ClN2O4
Rabeprazole Impurity 23???,2-(?????)-4-???-3-??-,???86604-74-2C8H11Cl2NO
Rivastigmine EP Impurity G1-(3-???-??)-???23308-82-9C9H12O2
Ketorolac Trometamol74103-07-4C19H24N2O6
Phenylephrine EP Impurity C HCl1-(3-??????)-2-(?????)??????94240-17-2C9H12ClNO2
Esomeprazole Impurity 10874409-42-0C8H11NO
Tryptophan Impurity 2362697-73-8C5H11NO3S
Rivaroxaban EP Impurity F24065-33-6C5H3ClO2S
Ursodeoxycholic Acid EP Impurity G??????????????10538-55-3C25H42O4
Perindopril Related Compound A80875-98-5C9H15NO2
Norepinephrine Impurity 5729477-54-1C8H8O4
Sertraline EP Impurity B（SS Monomer）rac-cis-3,4-??????????55056-87-6C17H20ClN
Tiopronin Impurity 121269-37-4C10H16N2O6S2
Progesterone EP Impurity K4,9(11)-??????-3,20-??17652-16-3C21H28O2
Acetylcysteine Impurity 332-??-2-????-4-?????????15058-19-2C5H6NNaO2S
Sodium Valproate EP Impurity B2-?????20225-24-5C7H14O2
Ziprasidone EP Impurity A3-(1-?????)-1,2-???????87691-87-0C11H13N3S
Cefotaxime EP Impurity C66403-32-5C17H17N5O8S2
Salbutamol EP Impurity Q4-HYDROXY-3-(HYDROXYMETHYL)??????54030-32-9C8H8O3
Memantine Related Compound H?????[3.3.1.13,7]??-1-??,3,5,7-????-,???15210-60-3C13H24ClN
Sodium Valproate EP Impurity D2,2-????????52061-75-3C11H22O2
Bromocryptine Mesylate22260-51-1C33H44BrN5O8S
Rosuvastatin Impurity 186N-????-N-??-4-??????61445-55-4C5H10N2O3
Salbutamol EP Impurity E??-[(??-tert-?????)??]-m-???-4,??,??'-???24085-03-8C20H27NO3
Isavuconazole Impurity 3832399-12-5C7H10N2O
Ursodeoxycholic Acid Impurity 2(Glycoursodeoxycholic Acid)64480-66-6C26H43NO5
Pregabalin Impurity 2(3-Isobutylglutaric Acid)3-?????????75143-89-4C9H16O4
Pioglitazone Impurity 85-(4-???????)-2,4-???????74772-78-4C10H9NO3S
Piracetam EP Impurity D(2-OXOPYRROLIDIN-1-YL)????53934-76-2C6H9NO3
N-cyclopentylcyclohexanamineN-??????????????40649-25-0C11H21N
Ethyl 2-propylpentanoate??2-?????????17022-31-0C10H20O2
Acarbose EP Impurity D68128-53-0C19H33NO13
Cefuroxime Sodium EP Impurity DCefuroxiMeAxetil???C76598-06-6C18H15Cl3N4O9S
Vonoprazan Fumarate impurity 365-??-1H-??-3-???????56448-22-7C11H9NO
Isavuconazole Impurity 54??????-1-?????????50893-53-3C3H4Cl2O2
Cefazolin USP RC A1H-????-1-????21732-17-2C3H4N4O2
Diclofenac sodium Impurity 3815307-93-4C12H9Cl2N
Posaconazole Impurity 151?? (R)-??17392-83-5C4H8O3
Timolol EP Impurity F3-???-4-?????-1,2,5-?????30165-96-9C6H8ClN3OS
Cefuroxime Impurity 3615690-38-7C8H10N2O4S
Avanafil Impurity 701-??-3(3-??????)???32897-26-0C8H19N3O
Acetylcysteine Impurity 3618725-37-6C7H11NO4S
Propofol EP Impurity N3,5-??????-4-???????13423-73-9C13H18O3
Esomeprazole Impurity 404-???-2,3,5-???????-N-????86604-80-0C9H13NO2
Adefovir Impurity 32?????-2,2-??????????18997-19-8C6H11ClO2
Sertraline EP Impurity G HCl?????Hcl79645-15-1C17H18Cl3N
Dapagliflozin Impurity 1252,6-????,?????????21436-98-6C8H12ClN
Roxatidine Impurity 473279-04-6C12H17NO
Vildagliptin Impurity 4019943-27-2C10H14N2O2
Fluoxetine EP Impurity A(Atomoxetine Related Compound A)42142-52-9C10H15NO
Sodium Valproate EP Impurity C62391-99-5C8H16O2
Cefuroxime Axetil Impurity 826395-99-3C8H10N2O3S
Valproic Acid EP Impurity I2-?????????13310-75-3C8H15N
Pomalidomide Impurity 62,6-???????-3-????????24666-56-6C5H9ClN2O2
Sertraline EP Impurity C(1S,4S-Isomer)3-????????????79646-00-7C17H19Cl2N
Rifaximin EP Impurity G?????????80621-76-7C43H49N3O11
Salbutamol EP Impurity J(HCl)SalbutaMon???41489-89-8C13H20ClNO3
Ornidazole Impurity 4019182-82-2C4H4N4O4
Erythromycin EP Impurity D23893-13-2C37H65NO12
Tofacitinib Impurity 1164-??-3-????????77862-24-9C7H10N2
Dabigatran Impurity 96n-???????16156-50-6C7H16O3S
3,3'-Disulfanediylbis(propan-1-ol)??(3-????????)?????30453-21-5C6H14O2S2
Azilsartan Impurity 694-(??????)-5-??-1,3-???-2-??91526-18-0C5H6O4
Ribavirin EP Impurity A?????????A(15mg)(1-??-D-??????-1H-1,2,4-????-3-?????)39925-19-4C8H11N3O6
Sodium Picosulfate EP Impurity A????????????A(20mg)(4-[(???-2-?)(4-??????)??]???????)32500-19-9C18H16NNaO5S
Terazosin EP Impurity A（Doxazosin EP Impurity F）23680-84-4C10H10ClN3O2
Desvenlafaxine??????93413-62-8C16H25NO2
Ganciclovir Impurity 16???????-O-?????88110-89-8C11H15N5O5
Piracetam EP Impurity B2-OXO-1-??????????????59776-88-4C7H11NO3
Trimethoprim EP Impurity E60729-91-1C14H17N3O4
Citalopram EP Impurity D HCl97743-99-2C19H19FN2O
Ribavirin EP Impurity F???????F58151-87-4C10H14N4O6
Propofol Impurity 273-(3,5-?-tert-??-4-??????)?????20170-32-5C17H26O3
Lansoprazole Impurity 4422710-07-2C7H9NO
Rifaximin EP Impurity F14487-05-9C39H47NO14
Tadalafil Impurity 3914907-27-8C12H15ClN2O2
Sodium Valproate EP Impurity G???????52061-73-1C11H23NO
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