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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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(Z)-Ceftizoxime Impurity 22630907-20-7C13H13N5O5S2
Xylometazoline EP Impurity AN-(2-?????)-4-tert-??-2,6-?????????94266-17-8C16H26N2O
Rapamycin-d3 (Sirolimus-d3)392711-19-2C51H76D3NO13
Xylometazoline EP Impurity B4-??-??-2,6-??????????19387-83-8C13H19Cl
Verapamil EP Impurity J??????67018-85-3C26H36N2O4
Verapamil EP Impurity O959011-16-6C27H38N2O4
Pentoxifylline EP Impurity D59413-14-8C10H14N4O3
Oseltamivir Impurity 86651324-08-2C26H45ClN2O4
Peramivir Impurity 142124296-37-1C15H28N4O4
Peramivir Impurity 1219503-26-5C3H6ClN5
Trazodone Impurity 3079975-63-6C16H16Cl2N2
Iguratimod Impurity 39123662-92-0C18H16N2O6S
Butylphthalide Impurity 6140125-50-6C8H4Br2O2
O-Desmethyl Adapalene125316-60-1C27H26O3
Verapamil EP Impurity I???????I2893-91-6C26H36N2O4
Acipimox Impurity 2????????,5-??-,1-????(9CI)98502-96-6C6H6N2O3
Phenytoin Impurity 106802-95-5C15H14N2O3
Pyridoxine Impurity 71385767-86-1C12H17NO3
Urapidil Impurity 434661-79-5C20H29N5O3
Tolvaptan Impurity 91432725-23-9C26H26N2O3
7α-Hydroxy Cholesterol5-CHOLESTEN-3-??,7-??-??566-26-7C27H46O2
Urapidil Impurity 81-(2-?????)???????5464-78-8C11H17ClN2O
Cilastatin EP Impurity C2245159-80-0C22H36N2O6S
Hyoscine Butylbromide EP Impurity C BromideN-?? ????? ?????155-41-9C18H24BrNO4
Cholesterol EP Impurity C651-54-7C27H44O
D-Nebivolol (SR,RR)213132-06-0C22H26ClF2NO4
Hyoscine Butylbromide EP Impurity D Bromide30269-50-2C20H28BrNO4
Nebivolol Impurity 6（SS,SS）119365-28-5C22H25F2NO4
Isotretinoin EP Impurity F11-??????68070-35-9C20H28O2
Doxorubicin Dimer Impurity 132755741-04-7C54H56N2O21
Nicotine EP Impurity G????494-52-0C10H14N2
Revefenacin Impurity 10743460-48-2C21H27N3O2
Ruxolitinib Impurity 82606144-45-8C16H18N6O
Ruxolitinib Impurity 61911644-32-0C17H20N6O
Roxadustat Impurity 51421312-36-8C20H18N2O5
9,13-Di-cis Vitamin A Palmitate34356-30-4C36H60O2
Dydrogesterone Impurity 73,20-??(??????)????-5,7-??19592-55-3C25H36O4
Morinidazole Impurity 41415561-33-9
Beraprost Sodium (Mixture of Diastereomers)496807-11-5C24H31NaO5
Roxadustat Impurity 12301113-15-3C19H16N2O5
Oxacillin EP Impurity D1642559-63-4C18H21N3O4S
Upadacitinib Impurity 252050038-81-6C32H35N5O7S
Avatrombopag Impurity 22681355-40-6C29H34Cl2N6O4S2
Baricitinib Impurity 25 HCl2497340-56-2C14H14ClN7
Metaraminol Impurity 57???,2-????-2-??-3-??-,(2S)-(9CI)71698-08-3C5H8O4
Chlorhexidine EP Impurity O2508008-02-2C22H30Cl2N10
Moxidectin EP Impurity C114041-23-5C36H51NO8
Salicylic Acid Impurity 526171-04-0C7H12N2O2
Amphotericin B ChP Impurity D((13S)-13-O-Methylamphotericin)944242-31-3C48H75NO17
Pyridoxine Impurity 37 DiHCl2726926-28-7C16H20N2O5
Flupentixol Impurity 252748309-11-5C23H28ClF3N2O3S
Peramivir Trihydrate1041434-82-5C15H30N4O5
Upadacitinib Impurity 465-???-4,7-?????875781-43-4C6H4BrN3
Metaraminol Impurity 14 HCl2277270-00-3C9H11NO2
Chlorhexidine EP Impurity L2518301-34-1C13H15ClN2O6
Oxacyclohexane Open Ring Tacrolimus144432-23-5C44H71NO13
Tacrolimus Lactone Isomer (Iso-FK-506)134590-88-8C44H69NO12
Propafenone EP Impurity F1329643-40-4C33H32O5
Timolol EP Impurity C Maleate610271-57-3C23H35N7O8S2
Progesterone EP Impurity E20-???????????????5062-62-4C23H34O3
Telmisartan EP Impurity E6-Des(1-??-2-???????)-6-????TelMisartan884330-12-5C26H24N2O4
Diltiazem EP Impurity C HCI1286126-67-7C21H25ClN2O4S
Telmisartan EP Impurity J885045-90-9C33H29ClN4O2
Ubidecarenone (Coenzyme Q10) EP Impurity B????7303-95-7C44H66O4
Famotidine EP Impurity JFaMotidine??????????76824-14-1C9H14N4O2S2
Fingolimod EP Impurity I249289-10-9C21H35NO3
Glycocholic acid Ethyl ester???????????517904-33-5C28H47NO6
Voriconazole-d3?????137234-62-9C16H14F3N5O
Cefditoren Pivoxil Impurity 5878002-86-9C25H28N6O7S3
Spironolactone EP Impurity A132458-33-4C24H30O4S
cis-propenylphosphonic acid??-????????25383-06-6C3H7O3P
Atropine EP Impurity G ((R)-Isomer) ((R)-(-)-Littorine)21956-47-8C17H23NO3
Ramipril EP Impurity A?????????A(30mg)((2S,3aS,6aS)-1-[(S)2-[[(S)-1-(???????)-3-?????]???]-1-?????]-??????????[b]??-2-?????)108313-11-7C22H30N2O5
Progesterone EP Impurity D20α-????-4-????-3-?5035-09-6C23H34O3
Biotin Impurity 822342-46-7C9H18N2O2S
Ubidecarenone Impurity 8(Coenzyme Q10 Impurity A)2,3-????-5-??-1,4-??????3066-90-8C9H12O4
Propafenone EP Impurity C2'-(???????)-3-????????22525-95-7C18H18O3
Atomoxetine EP Impurity G DiHCl2706536-33-4C27H34N2O2
Pomalidomide19171-19-8C13H11N3O4
Naproxen Impurity 28(S)-α-??-6-???-2-??????????????26159-35-3C15H16O3
Calcium Levofolinate EP Impurity I Calcium salt1148151-21-6C20H25CaN7O6
Propafenone EP Impurity DDepropylaMinoHydroxy?????91401-73-9C18H20O4
Ketorolac EP Impurity J108061-03-6C17H17NO3
Micafungin Open-ring Analog539823-82-0C56H72N9NaO23S
Sulbactam EP Impurity D????26631-90-3C8H10BrNO3S
Tacrolimus Related Compound A135635-46-0C43H69NO12
Piperacillin Impurity 2767275-27-8C23H27N5O8S
Fudosteine Impurity 201023971-10-9C6H13NO3S
Oseltamivir Impurity 195312904-18-0C19H32N2O4
Pregabalin Impurity 451141362-94-8C8H15NO2
Levothyroxine Impurity 264-(4-????-3,5-???????)-3,5-????????????176258-88-1C14H9I4NO3
Progesterone EP Impurity J1,4-??????-3,20-???1162-54-5C21H28O2
Mivacurium Chloride (Mixture of Diastereomers)106861-44-3C58H80ClN2O14+
Pemetrexed Impurity 15 (Mixture of Diastereomers)193281-00-4C20H21N5O7
Spironolactone EP Impurity C3-oxopregn-4-ene-21,17??-?????976-70-5C22H30O3
Cefprozil EP Impurity C(Cefadroxil EP Impurity E)147103-93-3C11H11N3O3
Cefazolin Impurity 11（Cefazolin USP Impurity E）Des[(5-??-1,3,4-?????-2-?)??]????-3-???478494-71-2C11H12N6O5S
Bupivacaine Impurity 282125994-25-2C18H28N2O
Phenylephrine Impurity 581007885-60-0C9H13NO2
Diltiazem EP Impurity D HClN-DESMETHYLDILTIAZEM,???130606-60-9C21H25ClN2O4S
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