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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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Propofol Impurity 52
Rifampicin Impurity 61416773-22-2C43H58N4O12
Naltrexone Impurity 2164643-76-1C21H23NO6
Phenylephrine Impurity 571477-63-0C9H13NO2
Naltrexone Impurity 23102272-79-7C22H25NO8
(S)-(-)-Bupivacaine1-??-N-(2,6-?????)-????-2-??????27262-47-1C18H28N2O
Sulfadimethoxine EP Impurity B4-(??????)-N-(2,6-????-4-?????)???????555-25-9C14H16N4O5S
Loxoprofen Impurity 5110472-24-9C7H10O3
Propofol EP Impurity B2-(1-?????)-6-(1-????)??74926-89-9C12H16O
Tiopronin Impurity 285038-45-5C5H8ClNO3
Phenylephrine 4,6-DMTQ Impurity(Peak-2)1,2,3,4-??????-4,8-?????-2-??-?????23824-25-1C10H13NO2
Atropine Impurity 18532-24-1C8H13NO
Atropine Impurity 44109496-01-7C17H21NO3
Itraconazole Impurity 642570971-58-1C12H16N4O
Tizanidine EP Impurity B51323-05-8C7H5ClN4S2
Loxoprofen Impurity 50??????????????111128-12-2C10H11BrO2
Ketoprofen Impurity 3123323-37-7C14H31NO5
Propofol Impurity 50C19H39BrO
Propofol EP Impurity L2,2-???-4-?????-1,3-?????(PropofolImpurityL)201166-22-5C12H16O2
Rebamipide Impurity 690098-38-7C20H17ClN2O4
Tiopronin Impurity 4?????79-42-5C3H6O2S
Alverine EP Impurity E HCl878784-75-9C27H34ClN
rac-Atomoxetine EP Impurity C HCl??????????C(10mg)(N-??-3-??-3-(p-????)???-1-?????)873310-31-7C17H22ClNO
Camptothecin Impurity 886639-53-4C23H22N2O5
N-(2-aminoethyl)-5-(1,2-dithiolan-3-yl)pentanamide hydrochlorideC10H20N2OS2
Rebamipide Impurity 4100342-53-8C18H15ClN2O2
Carvedilol Impurity 262248746-67-8C24H25N3O5
Midazolam Impurity 20151921-06-1C18H12ClFN2O3
Parecoxib Sodium Impurity 251884279-18-8C18H17NO4S
Ketoprofen EP Impurity K (Mixture of Isomers)1785760-29-3C19H20O3
Naltrexone Impurity 19112269-62-2C20H23NO5
Bupivacaine-d9?????-d9474668-57-0C18H28N2O
Indacaterol Impurity 202250243-41-3C26H32N2O3
Mycophenolate Mofetil (Mixture of E and Z Isomers)(4Z)-???????????(EP???C)1076198-64-5C23H31NO7
R-Propranolol HCl(R)-(+)-??????13071-11-9C16H21NO2.ClH
4-Hydroxy Propranolol HCl14133-90-5C16H21NO3.ClH
Dehydroxy Indacaterol Impurity918968-40-8C24H28N2O2
Progesterone Impurity 53903-03-7C22H32O2
Propofol EP Impurity Ko-CuMenyl????????14366-59-7C12H18O
Atropine Impurity 42R-(+)-?????13269-35-7C17H23NO3
Ketoprofen Impurity 601777830-05-3C20H23NO5
Rifampicin Impurity 425-????????16783-99-6C41H56N4O11
Busulfan Impurity 20???4-???????-1-?????31465-25-5C4H9NaO4S
Propofol Impurity 51C12H14N2O6
Itraconazole-d51217510-38-7C35H38Cl2N8O4
Progesterone EP Impurity F2257421-78-4C21H30O2
Rebamipide impurity 19??-???????698-16-8C7H6ClNO
Albendazole EP Impurity J946498-41-5C9H7Cl2N3O2
Doxazosin EP Impurity B1-(2,3-????-1,4-?????-2-?????)???????70918-74-0C13H17ClN2O3
Safinamide Impurity 32(2S)-2-[[4-[(2-??????)???]??]?????]??????133865-88-0C17H19FN2O2
Caspofungin Impurity E HAc
Carvedilol impurity 22(R)-(+)-4'-???????-?????142227-49-4C24H26N2O5
Parecoxib Sodium Impurity 141709956-89-7C19H18N2O4S
Ertapenem Impurity 101199797-43-7C44H48N6O13S2
Alverine EP Impurity C HCl13125-63-8C11H18ClN
Amorolfine EP Impurity F106614-66-8C14H20O
Dasatinib Impurity 642468737-75-7C22H25Cl2N7O2S
Finasteride Impurity 144-?????-3-?-5-?-17-?????302-97-6C20H28O3
Ketorolac Impurity 41METHANETRICARBOXYLICACID,(5-BENZOYL-1H-PYRROL-2-YL)-,????????136116-84-2C21H23NO7
Ertapenem Impurity 11402955-38-8C44H50N6O14S2
Famciclovir Impurity 1197845-60-8C14H18ClN5O4
Ertapenem Impurity 9402955-37-7C44H48N6O13S2
Chlorthalidone EP Impurity A345930-32-7C14H9ClO6S
Docetaxel Impurity 451354900-65-4C51H59NO15
Ertapenem Impurity 291150883-75-2C22H27N3O8S
Clobetasol Propionate EP Impurity F2412496-00-3C22H27FO4
Demeclocycline EP Impurity A??????987-02-0C21H22N2O8
N-Nitroso Safinamide2657645-00-4C17H18FN3O3
Acetylcysteine Impurity 40 xTFA salt
Parecoxib sodium Impurity 8????????D181696-35-5C16H13NO4S
Amitriptyline EP Impurity E HCl (Mixture of Diastereomers)C20H29N
Cloxacillin EP Impurity B1642559-64-5C18H20ClN3O4S
Desfuroyl Ceftiofur Sodium Salt??????????120882-22-6C14H15N5O5S3
Brivanib649735-46-6C19H19FN4O3
Biotin EP Impurity D(Mixture of Diastereomers)9-?????(???????????)415725-35-8C11H18N2O3S
(1R,3r,5S)-Ipratropium Impurity 3588607-15-2C18H25NO2
Pre-Vitamin D3 Octanoate (>80%)927822-17-1C35H58O2
Pre-Vitamin D3 Decanoate (>80%)927822-18-2C37H62O2
Cefoxitin Impurity 4340514-91-8C13H20N2O4S
Caspofungin Impurity C251095-73-5C52H88N10O15
Chlorthalidone Impurity 15956-92-3C14H10ClNO2
Exemestane EP Impurity C2130745-60-5C21H24O2
Caspofungin EP Impurity B(RRT=1.50)314080-31-4C50H82N8O16
Bilirubin Diglucuronide?????-??-bD-???????17459-92-6C45H52N4O18
Propranolol Impurity 61-???-3-(1-?????)???-2-?20133-93-1C13H13ClO2
Albendazole EP Impurity K70484-51-4C13H17N3O2S
Amorolfine EP Impurity G HCl106614-69-1C21H33NO2
Propofol Impurity 56
Progesterone Impurity 5214508-05-5C22H32O3
Atropine Impurity 38????O-(????)5226-98-2C17H23NO6S
Propranolol Impurity 162-((2-?????)??)-???5234-06-0C13H12O2
Norepinephrine Impurity 66 HCl62-22-6C10H15NO3.ClH
Bupivacaine EP Impurity B Hydrochloride2,6-??????????????65797-42-4
Safinamide Impurity 381827614-91-4C18H20FNO3
Atomoxetine impurity 362659259-65-9C10H14N2O2
Orlistat impurity 4168659-61-0C19H19P
Propofol Impurity 54
Propofol Impurity 53
Midazolam Impurity 40
Norepinephrine Impurity 53 HCl490-90-4C8H5NO3
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