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

?? ?:Cato Research Chemicals Inc.

??:020-81960175

???:3001970523@qq.com

??:China

? ?? ?:17709

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Cinacalcet Impurity 12	(R)-N-(1-(????-1-?)??)-3-(M-??)???-1-??	253337-60-9	C22H25N
Perospirone Impurity 16
Norfloxacin Impurity 41
Mirabegron Impurity 37
Clopidogrel Thienopyridine Impurity		28783-41-7	C7H9NS
Denaverine Impurity 1	2-(DediMethyldeaMino)???????	2594-45-8	C20H24O3
Loxoprofen Impurity 24	raccis-Loxoprofen???	371753-20-7	C15H20O3
Ramelteon Impurity 4
Brivaracetam Impurity 78		1956436-60-4	C9H18O3
5,7-Difluorochroman-4-one	5,7-????????-4-?	844648-22-2	C9H6F2O2
trans-Ferulic Acid		537-98-4	C10H10O4
2-Bromopropionyl bromide	2-?????????????	563-76-8	C3H4Br2O
vinyl ether	???????	109-92-2	C4H8O
Indocyanine Green Impurity 13	1-(2,4-??????)?????????	4185-69-7	C11H8ClN3O4
Lurasidone Impurity 10		14805-29-9	C9H11NO2
6-Methyluracil		626-48-2	C5H6N2O2
Valaciclovir EP Impurity D(hydrochloride)	??????N-??-L-????????	1346617-49-9	C15H25ClN6O4
Norfloxacin Impurity 9		74011-47-5	C18H22FN3O3
Ethyl 2-Bromoisobutyrate	?? 2-???????????	600-00-0	C6H11BrO2
(S) -4-Hydroxymephenytoin	(S)-4-??????????	82695-93-0	C12H14N2O3
Mirabegron Impurity 11		1684452-80-9	C21H24N4O2S
Dopamine 3-O-Sulfate	4-(2-?????)-1-?????-2-????-??	51317-41-0	C8H11NO5S
H-Gln-Gln-OH	H-GLN-GLN-?	54419-93-1	C10H18N4O5
Epinastine Impurity 5	6-(???????)??????	74860-00-7	C23H16N2O2
4,4',4'',4'''-Methanetetrayltetrabenzaldehyde		617706-61-3	C29H20O4
Relugolix Impurity 79		6378-51-4	C3H8N2O3
Dextromethorphan Impurity 14 (Mixture of Rotamers)		29144-31-8	C18H23NO2
Nicergoline Impurity 14		40170-12-5	C17H22N2O
Glyceryl Trinitrate Solution EP Impurity E		623-87-0	C3H6N2O7
3β,5α,6β-Trihydroxycholestane	CHOLESTANE-3B,5A,6B-???	1253-84-5	C27H48O3
Posaconazole Impurity 24(S,S,S,R)		2243785-98-8	C37H42F2N8O4
(R)-Olodaterol Impurity 4
1,4-Divinylbenzene (stabilized with MEHQ)	1,4-?????	105-06-6	C10H10
Piperacillin Impurity 28
Biapenem Impurity 20	?????	106-95-6	C3H5Br
Methotrexate Diglutamate		41600-13-9	C25H29N9O8
Hydroxychloroquine Impurity 53	N-???????	109-83-1	C3H9NO
2-(Dimethylamino)ethyl methanesulfonate		44929-30-8	C5H13NO3S
5 beta, 6 beta-Epoxy-Cholestanol	5??,6??-???????-3??-OL	4025-59-6	C27H46O2
N-Nitroso Cimetidine 1	????????	73785-40-7	C10H15N7OS
Canagliflozin HeMihydrate		928672-86-0	2(C24H25FO5S).H2O
Dapagliflozin Impurity 119
Irinotecan Lactone Impurity	??????????	143490-53-3	C32H36N4O5
Pirfenidone-d5 (5-Methyl-N-Phenyl-2-1H-Pyridone-d5)	5-??-N-??-2-1H-???-d5(?????-d5)	1020719-62-3	C12H11NO
Copeptin (human)	???(??)	78362-34-2	C177H279N49O58
Abaloparatide Acetate		247062-33-5	C174H300N56O49
Z-D-Val-OH		1685-33-2	C13H17NO4
H-Glu(Val-OH)-OH	H-??-GLU-VAL-OH	2746-34-1	C10H18N2O5
Vilanterol - API Standards		503068-34-6	C24H33Cl2NO5
Calcium Dobesilate Impurity N4 Bis-diethylamine Salt		57775-25-4	C10H17NO8S2
N4,N7-Bis(3-chloro-4-fluorophenyl)-6-nitroquinazoline-4,7-diamine		2044702-52-3	C20H11Cl2F2N5O2
Empagliflozin Impurity 217
Methotrexate Impurity 64	N-[p-[[(2,4-????????-7-?)??]?????]???]-L-????	52980-66-2	C20H22N8O5
6beta-Hydroxy Eplerenone	6-B-??????????	209253-80-5	C24H30O7
Quetiapine-d4 Hemifumarate	Quetiapine-d4HeMifu????	1217310-65-0	C46H46D8N6O8S2
1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-aminopiperidine-4-carboxylic acid
Fe(II) Protoporphyrin IX (Hematin)		14875-96-8	C34H31FeN4O4-
H-Nva-OtBu · HCl		119483-47-5	C9H20ClNO2
H-(2S,4R)-γ-Hydroxy-Glu-OH	H-(2S,4R)-??-?????-GLU-OH	2485-33-8	C5H9NO5
H-β-Ala-OMe·HCl		3196-73-4	C4H10ClNO2
H-β-Chloro-Ala-OMe · HCl		17136-54-8	C4H8ClNO2.ClH
H-Trp-Leu-OH	H-TRP-LEU-?	13123-35-8	C17H23N3O3
D-Cystine		349-46-2	C6H12N2O4S2
1,2-Dinitroglycerin	1,2-????????	621-65-8	C3H6N2O7
H-Glu(Abu-OH)-OH	H-??-GLU-ABU-OH	16869-42-4	C9H16N2O5
Fmoc-D-Cit-D-Cit-OH XTFA
Cyclo(-Gly-L-Tyr)	3-[(4-??????)??]????-2,5-??	5845-66-9	C11H12N2O3
11-Dehydrothromboxane B2	11-????????B2	67910-12-7	C20H32O6
Imipenem Impurity 116
Paraben Impurity 3			C13H18O8
Mavacoxib Impurity 6
(2R,3S)-Epoxide Vitamin K1		85955-78-8	C31H46O3
D-[Ser]8-Semaglutide X TFA salt
Letermovir Impurity 29		65140-97-8	C13H10FNO2
Cyclobutanecarboxylic Anhydride		25774-35-0	C10H14O3
(3S,6S,12aS)-1,2,3,4,6,7,12,12a-Octahydro-9-methoxy-6-( 2-methylpropyl)-1,4-dioxopyrazino[1',2':1,6]pyrido[3,4- b]indole-3-propanoic Acid tert-Butyl Ester		461054-93-3	C26H35N3O5
Mirabegron Impurity 93
Faropenem Impurity 8		754152-74-4	C12H17NO6S
Tinidazole Impurity 24
(2R,5S)-5-Hydroxypiperidine-2-carboxylic acid hydrochloride		138662-59-6	C6H12ClNO3
Abemaciclib-D8		2088650-53-5	C27H32F2N8
Orlistat impurity 41		68659-61-0	C19H19P
Methyl-3-4-methoxyphenyl Glycidate		42245-42-1	C11H12O4
Methotrexate Tetraglutamate		73610-81-8	C35H43N11O14
Bicyclic Chinese Pharmacopoeia Impurity 2
Butyrophenone-2',3',4',5',6'-d5		39058-44-1	C10H7D5O
N-(2,6-dimethylphenyl)-1-isobutylpiperidine-2-carboxamide		98706-52-6	C18H28N2O
Amino acid Impurity 4 (Z/E mixture)		66759-18-0	C7H10N2O2
Perospirone Impurity 40
Ropivacaine-d7		684647-62-9	C17H26N2O
Rupatadine Impurity 22 1.5 hydrate
Aripiprazole Impurity 55
Apixaban Impurity 55	??(2E)-???[(4-?????)??????]????	27143-09-5	C10H10Cl2N2O2
Ethambutol EP Impurity C DiHCl	???????	134566-79-3	C10H25ClN2O2
Mirabegron Impurity 32		1310279-36-7	C16H20N2
Mirabegron Impurity 36		1684452-88-7	C16H16N2O4
Ethyl 2-hydroxyquinoline-4-carboxylate	4-???????-2-???	5466-27-3	C12H11NO3
Ipratropium Impurity 26
Doxapram N-Oxide		2724726-82-1	C24H30N2O3
N‐Nitrosonorfloxacin		74011-53-3	C16H17FN4O4

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

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