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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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benzofuran-6-carboxylic acid????-6-?????77095-51-3C9H6O3
Lidocaine EP Impurity B?????N-????2903-45-9C14H22N2O2
Lidocaine EP Impurity H1131-01-7C10H12ClNO
S-Levocetirizine(S)-????????163837-48-7C21H26Cl2N2O3
Levofloxacin Desethylene Diformyl ImpurityN,N'-????-N,N'-?????????151377-74-1C18H18FN3O6
Levonorgestrel EP Impurity I21508-50-9C21H28O3
Levocetirizine Impurity 11246870-46-2C23H29ClN2O3
Cetirizine Impurity 34 (Mixture of Diastereomers)????????????1243652-36-9C24H31ClN2O5
Levofloxacin EP Impurity G HCl(Levofloxacin USP Related Compound E HCl)???????????E1346603-62-0C16H19ClFN3O4
Levothyroxine EP Impurity E3,5-????-L-???1041-01-6C15H13I2NO4
Levodopa Impurity 52503-44-8C9H10O3
Levodopa EP Impurity D5796-17-8C9H11NO4
R-Lifitegrast2271299-08-0C29H24Cl2N2O7S
Levofloxacin EP Impurity B117707-40-1C17H18FN3O4
rac Cetirizine N-Oxide (Mixture of Diastereomers)1076199-80-8C21H25ClN2O4
Levonorgestrel EP Impurity S176254-10-7C22H30O2
Levofloxacin Descarboxy Impurity（Levofloxacin EP Impurity E）???????????178964-53-9C17H20FN3O2
Levonorgestrel EP Impurity P5(6)-?????-4(5)-?????D-(-)-??????100021-05-4C21H28O2
Levonorgestrel EP Impurity J6-??D-(-)-??????1175109-63-3C21H26O3
Levothyroxine Impurity 17????????51-26-3C15H11I3O4
Levofloxacin Impurity 26106939-34-8C15H13F2NO4
Lidocaine EP Impurity C2198-53-0C10H13NO
Levofloxacin Impurity 139-??????????197291-75-1C18H20FN3O4
Levothyroxine EP Impurity F???-4-????-3,5-?????????DISCONTINUED911661-90-0C21H13I6NO5
Levonorgestrel EP Impurity V18-???????14009-70-2C22H28O2
Lidocaine EP Impurity J HCl2-(DiethylaMino)-N-(2,5-diMethylphenyl)acetaMide???1012864-23-1C14H23ClN2O
Levocetirizine Impurity 1 (Chlorobenzhydryl piperazine)300543-56-0C17H19ClN2
Cetirizine EP Impurity D1,4-BIS[(4-?????)????]????XNUMX???346451-15-8C30H28Cl2N2
Ofloxacin EP Impurity F(Levofloxacin Impurity 25)OFLOXACINN-OXIDE(??????????)104721-52-0C18H20FN3O5
Levonorgestrel EP Impurity T14507-51-8C22H30O2
Levocarnitine Impurity 6L-??????? ?????2788-28-5C7H15ClN2O
Cetirizine Impurity 16134-85-0C13H9ClO
Levonorgestrel EP Impurity H6β-???????????55555-97-0C21H28O3
Levofloxacin 9-Piperazinyl Isomer9-???????????178912-62-4C18H20FN3O4
Cetirizine Polyethylene Glycol (PEG) Ester1509941-93-8
Levofloxacin Impurity 14110548-07-7C13H9F2NO4
Levodopa EP Impurity A27244-64-0C9H11NO5
Levosimendan Impurity 13618458-79-0C30H30N12O3
Levetiracetam EP Impurity A67118-31-4C8H13NO3
Levonorgestrel EP Impurity B19914-67-1C21H28O2
2-(tert-butoxycarbonyl)-5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxylic acid2-(tert-???????)-5,7-????-1,2,3,4-???????????-6-?????851784-82-2C15H17Cl2NO4
Lidocaine Impurity 193.5-??????108-69-0C8H11N
Cetirizine EP Impurity G109806-71-5C19H23ClN2O
Levocetirizine amide impurity HCl909779-33-5C21H26ClN3O2
Monochlorotriiodothyronine909279-46-5C15H11ClI3NO4
Cetirizine EP Impurity G Hydrochloride164726-80-1C19H25Cl3N2O
Levocetirizine Impurity 8??????????83881-46-3C22H27ClN2O3
Levonorgestrel EP Impurity DEP??????????D32419-58-2C21H30O
Levothyroxine EP Impurity K5817-39-0C15H12I3NO4
Levonorgestrel EP Impurity M6,7-???????????51087-61-7C21H26O2
Levonorgestrel EP Impurity C13-Ethyl-3-ethynyl-18,19-dinor-17α-pregna-3,5-dien-20-yn-17-ol(???????????)1337972-89-0C23H28O
Levothyroxine EP Impurity I3,5,3',5'-????????????2016-06-0C13H6I4O3
Lidocaine EP Impurity D(HCl)?????????7729-94-4C12H19ClN2O
Levonorgestrel EP Impurity W155683-59-3C21H24O2
Levocarnitine EP Impurity BD-(+)-???124-83-4C10H16O4
Levetiracetam Impurities 25263552-76-7C10H12O5
Levothyroxine EP Impurity D3,3',5,5'-????????-????67-30-1C14H8I4O4
Cetirizine 4-Chlorobenzhydrol Impurity (USP)4-??????? ???119-56-2C13H11ClO
Levofloxacin EP Impurity C(Levofloxacin N-Oxide)??????N-????117678-38-3C18H20FN3O5
Levonorgestrel EP Impurity G6α-???????????87585-03-3C21H28O3
Cetirizine EP Impurity D DiHCl???????DDiHCl856841-95-7C30H30Cl4N2
Lidocaine EP Impurity G(HCl)2-(????????)-2',6'-??????????35891-87-3C13H21ClN2O
Cetirizine EP Impurity A303-26-4C17H19ClN2
Lidocaine Impurity 3170336-49-1C20H22N2O2
1-(4-Cyano-4-(4-fluorophenyl)cyclohexyl)-3-methyl-4-phenylpiperidine-4-carboxylic acid monohydrochloride79547-78-7C26H30ClFN2O2
Levodopa EP Impurity C7636-26-2C10H13NO4
Levothyroxine EP Impurity J4604-41-5C15H13I2NO4
Lidocaine EP Impurity D?????????????7728-40-7C12H18N2O
Lidocaine EP Impurity K HydrochlorideN-(2,6-?????)-2-(???????)?????????(???????E)50295-20-0C13H21ClN2O
Levodopa Impurity 63-O-??????85933-19-3C11H16N2O4
Levofloxacin EP Impurity G(Levofloxacin USP Related Compound E)N,N'-?????????????151250-76-9C16H18FN3O4
Levofloxacin Impurity 10???????????C(25mg)((S)-??9-????-2,3-????-3-??-10-(4-??-1-?????)-7-??-7H-???[1,2,3,1,4-de]-6-????-XNUMX-???????)177472-30-9C20H24FN3O4
Levonorgestrel EP Impurity N???????????N4222-96-2C19H26O2
Lidocaine EP Impurity I(HCl)2-(DiethylaMino)-N-(2,4-diMethylphenyl)acetaMide???17289-54-2C14H23ClN2O
Levofloxacin EP Impurity F100986-89-8C13H9F2NO4
Cetirizine EP Impurity B1000690-91-4C19H22Cl2N2O2
Levofloxacin Impurity 1582419-52-1C17H18FN3O4
Levetiracetam EP Impurity C2-???????142-08-5C5H5NO
L-Veratrylglycine32161-30-1C11H15NO4
Levothyroxine EP Impurity A6893-02-3C15H12I3NO4
Levetiracetam EP Impurity D103765-01-1C8H14N2O2
Linaclotide???????851199-59-2C59H79N15O21S6
Cetirizine EP Impurity F(2HCl)?????????????83881-54-3C21H26N2O3
Levonorgestrel EP Impurity O155683-60-6C22H32O3
Calcium Levofolinate EP Impurity E Calcium salt??????E944737-05-7C15H16N6O4
Levothyroxine EP Impurity C[4-(4-?????-3-???????)-3,5-????????]??????51-24-1C14H9I3O4
Levocarnitine EP Impurity A144205-67-4C7H14ClNO2
Levothyroxine N-Methylamide2088032-52-2C16H14I4N2O3
Levonorgestrel EP Impurity A1260525-53-8C21H26O2
D-CarnitineD-????541-14-0C7H15NO3
Levofloxacin R-Isomer（Levofloxacin EP Impurity A）D-?????100986-86-5C18H20FN3O4
Levothyroxine Sodium25416-65-3C15H10I4NNaO4
Levocetirizine Dihydrochloride??????????130018-87-0C21H27Cl3N2O3
Levodopa Impurity 93-???-L-???300-48-1C10H13NO4
Levothyroxine N-Acetyl ImpurityN-???L-???26041-51-0C17H13I4NO5
Lidocaine EP Impurity E745798-07-6C20H25N3O2
Lidocaine EP Impurity F(Hydrochloride)2-(DiethylaMino)-N-(2,3-diMethylphenyl)acetaMide???857170-72-0C14H23ClN2O
Cetirizine EP Impurity F????,2-[2-[4-(?????)-1-?????]???]-83881-53-2C21H26N2O3
Lifitegrast1025967-78-5C29H24Cl2N2O7S
Levofloxacin Impurity 1682419-35-0C13H9F2NO4
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