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

?? ?:Cato Research Chemicals Inc.

??:020-81960175

???:3008394369@qq.com

??:China

? ?? ?:15726

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Vitamin Impurity 48
Propofol Impurity 24	????-d17	1261393-54-7	C12HD17O
Naltrexone Impurity 23		102272-79-7	C22H25NO8
Meloxicam Impurity 11		1865298-74-3	C6H8N2O2S
Iohexol EP Impurity G (2,4-diiodo Isomer)
Norepinephrine impurity 89
Parecoxib Sodium Impurity 43		1373038-59-5	C16H15N3O5S2
Parecoxib sodium Impurity 9	Valdecoxib3'-SulfonaMide???	1373038-56-2	C16H14N2O3S
Methotrexate Impurity 40		94807-78-0	C12H14N2O6
Iodomethyl sulbactam		76247-39-7	C9H12INO5S
Propofol Impurity 56
Riociguat Impurity 13 HCl
Norfloxacin Impurity 40
Iodixanol Impurity 17	5–???-??????-N,N–??(2,3–?????????)-2,4,6–?????-1.?????	77203-11-3	C16H19ClI3N3O7
Pentoxifylline Impurity 26	???????????????	41050-96-8	C8H10N2O
DL-Homocysteine-d4	DL-??????-3,3,4,4-D4	416845-90-4	C4H5D4NO2S
Butylphthalide Impurity 5	2-(??????)???	612-20-4	C8H8O3
Oseltamivir Impurity 100
N-Nitroso Cimetidine 2		82069-10-1	C10H15N7OS
N-Nitroso Valganciclovir
Propofol Impurity 52
Irinotecan EP Impurity M	12-??????????	185336-12-3	C33H38N4O7
Lamotrigine-13C3,d3, Major	LaMotrigine-13C3,d3,???	1246815-13-3	C9H4Cl2D3N5
Iohexol Impurity 16	N,N'-??(2,3-????????)-5-???-1,3-?????????	76820-34-3	C14H19N3O8
Eplerenone EP Impurity B		192704-82-8	C24H30O6
Doxofylline Impurity 6		1429636-72-5	C11H16N4O4
Ropivacaine EP Impurity G	ROPIVACAINE?????B(50MG)((R)-(+)-1-PROPYLPIPERIDINE-2-CARBOXYLICACID(2,6-DIMETHYLPHENYL)-???????????????)	112773-90-7	C17H27ClN2O
Biotin impurity 20
Fluticasone Impurity 54		4571-51-1	C24H29FO6
Cyproheptadine Impurity 10		92496-64-5	C15H12O3
Propofol Impurity 17	2,4,6-?????????	2934-07-8	C15H24O
Ascorbic Acid Impurity 39		492-30-8	C6H10O5
Oseltamivir Impurity 114
Iodixanol Impurity 18
Methylnaltrexone Bromide Impurity 25
Norethindrone EP Impurity F	?????-3-????????	96487-85-3	C22H30O2
Tiotropium Bromide Impurity 32		1570-95-2	C9H12O2
Iodixanol EP Impurity C	?????????	171897-74-8	C33H42I6N6O14
Voglibose	?????	83480-29-9	C10H21NO7
Tenofovir alafenamide Impurity 33
Loxoprofen Impurity 81		83648-77-5	C15H20O3
Progesterone Impurity 54	20-????-1,4-??????-3-?	20248-18-4	C22H30O3
Propofol Impurity 53
Oseltamivir Impurity 212
Nintedanib impurity 81
Oseltamivir Impurity 214
Norfloxacin Impurity 39
Fesoterodine Impurity 2		1431511-18-0	C30H41NO7
Norethindrone EP Impurity H		51724-44-8	C20H26O3
Dasatinib Impurity 64		2468737-75-7	C22H25Cl2N7O2S
Docetaxel Impurity 12		158810-73-2	C46H55Cl2NO16
Piperacillin Impurity 20
Progesterone Impurity 52		14508-05-5	C22H32O3
Estradiol Impurity 39		50394-95-1	C25H28O4S
Propofol Impurity 54
Trazodone Impurity 48 HCl
Prednisone Impurity 5		215095-77-5	C21H26O6
Cefprozil (Z)-Isomer monohydrate	?????(Z)-????(200mg)	114876-72-1	C18H21N3O6S
2-Hydroxy Irinotecan		1346597-39-4	C33H38N4O7
Valganciclovir Impurity 12		194159-22-3	C24H30N6O8
Paliperidone Impurity 49		1008796-22-2	C18H18N2O3
Mycophenolate Mofetil Impurity 17		26644-06-4	C17H20O7
Biotin impurity 19		23015-53-4	C10H16N2O4S
Itraconazole-d5		1217510-38-7	C35H38Cl2N8O4
Irinotecan Impurity 34		176515-52-9	C32H38N4O4
Propofol Impurity 50		126614-26-4	C19H39BrO
Cefmetazole Impurity 23		56610-72-1	C24H24N6O4S2
Loxoprofen Impurity 33		98986-08-4	C12H15BrO2
Norepinephrine impurity 90
Norfloxacin Impurity 38
Norethindrone EP Impurity E		79727-03-0	C22H26O
Parecoxib Sodium Impurity 50		3026677-40-4
Cefazolin Impurity 58		1012-29-9	C11H22N2
Topiramate Impurity 21		14674-02-3	C9H21NO2S
Valganciclovir Impurity 3		1356847-27-2	C14H22N6O5
Oseltamivir Impurity 90
Eplerenone EP Impurity C		95716-70-4	C24H30O5
Silodosin impurity 25 HCl
Pranoprofen		52549-17-4	C15H13NO3
Mycophenolate Mofetil Impurity 15		24243-38-7	C17H20O6
Norethindrone EP Impurity D	??????,??????	68-23-5	C20H26O2
Caspofungin Impurity 24		1131958-73-0	C52H84D4N10O15
Rifaximin EP Impurity F		14487-05-9	C39H47NO14
Vitamin Impurity 33	????????	6381-77-7	C6H9NaO6
Oseltamivir Impurity 45
Pranoprofen Impurity 23
Rizatriptan EP Impurity I HCl	?????????	144034-84-4	C14H17N5
Ritonavir EP Impurity A		154212-61-0	C14H23N3O3S
Ceftizoxime Impurity 74(isomers mixture)		94088-75-2	C13H10N4O2S3
Minocycline-d7(Major)
(E)-7-chloro-5-(2-fluorophenyl)-2-(nitromethylene)-2,3-dihydro-1H-benzo[e][1,4]diazepine 4-oxide		60656-76-0	C16H11ClFN3O3
Procaterol Impurity 21		745012-34-4	C16H24N2O3
Itraconazole Impurity 14(and enantiomer)		67914-85-6	C13H13Cl2N3O3
Iodixanol Impurity 15
Pranoprofen Impurity 39
Losartan Impurity 22	????????????	39739-46-3	C6H14ClNO
Ertapenem Impurity 26
Ascorbic acid 13C6		1354064-87-1	C6H8O6
Clobetasol Propionate Impurity 12		3109-01-1	C20H25FO3
Itraconazole-d5		1217524-77-0	C35H33Cl2D5N8O5

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

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