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Shanghai Haohong Scientific Co., Ltd.??? ?? ??? ?????.

?? ?:Shanghai Haohong Scientific Co., Ltd.
??:400-8210725
???:malulu@leyan.com
??:China
URL: www.leyan.com/
? ?? ?:39996
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?? ????

Theophylline EP impurity C6-???-5-?????-1,3-??????7597-60-6C7H10N4O3
5-Ethynylisobenzofuran-1,3-dione4-????????73819-76-8C10H4O3
N-Acetyl-DL-norleucine7682-16-8C8H15NO3
(6R,7R)-7-((Z)-2-(Furan-2-yl)-2-(methoxyimino)acetamido)-8-oxo-3-((((2,2,2-trichloroacetyl)carbamoyl)oxy)methyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (Cefuroxime Impurity)CefuroxiMeAxetil???C76598-06-6C18H15Cl3N4O9S
rel-(4aR,8aS)-Decahydroquinoline???-????????767-92-0C9H17N
rac-2-[(1r,4r)-4-aminocyclohexyl]acetic acid hydrochloride, trans76325-96-7C8H16ClNO2
Undecylamine1-??????7307-55-3C11H25N
1,4-Dihydro-1,2-dimethyl-4-oxo-3-quinolinecarboxylic acid73281-83-1C12H11NO3
1-Ethyl-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid75338-42-0C12H8F3NO3
1-Iodoadamantane768-93-4C10H15I
(R)-2-Amino-3-(7-chloro-1H-indol-3-yl)propanoic acid75102-74-8C11H11ClN2O2
(3,4-Dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl)methanamine73344-75-9C11H15NO2
rel-(4R,5r)-5-(4-Chlorophenyl)-4-methylthiazolidin-2-oneTRANS-5-(4-?????)-4-??-2-?????78587-59-4C10H10ClNOS
2-((3-((4-((3-chloro-4- fluorophenyl)amino)-7- methoxyquinazolin-6- yl)oxy)propyl)amino)ethan-1-ol (Gefitinib Impurity）847949-56-8C20H22ClFN4O3
5-(2,5-Dioxotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride???????????????? ???73003-90-4C13H12O6
2-(2-Bromophenyl)-4,6-dipheyl-1,3,5-triazine77189-15-2C13H18O
Tributyl(Ethyl)phosphonium bromide???????????????7392-50-9C14H32BrP
Dichloro(phenyl)(vinyl)silane7719-02-0C8H8Cl2Si
tert-Butyl 2-(4-chlorophenyl)piperazine-1-carboxylate2-(4-?????)????-1-?????TERT-??????769944-39-0C15H21ClN2O2
(R)-3-Amino-3-(4-hydroxyphenyl)propanoic acid hydrochloride(R)-3-???-3-(4-?????-??)-?????73025-69-1C9H11NO3
2-Phenylbutanenitrile2-????????769-68-6C10H11N
(Rac)-Dehydrocostus Lactone74299-48-2C15H18O2
Betamethasone 21-Propionate?????21-???????75883-07-7C25H33FO6
Cirsiumaldehyde5,5'-????(5-???-2-??????)7389-38-0C12H10O5
Pentadec-1-yne765-13-9C15H28
Octanoic acid, potassium salt???, ???764-71-6C8H17KO2
1,2-Epoxyoctadecane7390-81-0C18H36O
Nickel(II)iodide hydrate???????7790-34-3H2I2NiO
((Benzyloxy)carbonyl)-l-leucyl-l-leucine7801-71-0C20H30N2O5
Dimethyldiphenylsilane778-24-5C14H16Si
Ethyl 8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylate4-?????-8-?????-3-??????????77156-75-3C13H13NO3
Cyclopropyl(4-fluorophenyl)methanone772-31-6C10H9FO
DMCM??-6,7-?????-4-??-??-???-3-??????82499-00-1C17H18N2O4
Benzyl (6-aminohexyl)carbamate hydrochloride78618-06-1C14H23ClN2O2
2-Acetyl-5-bromo-6-methoxynaphthalene2-???-5-???-6-???????84167-74-8C13H11BrO2
(2',6'-Dimethoxy[1,1'-biphenyl]-2-yl)bis(1,1-dimethylethyl)phosphine2-(?-tert-??????)-2',6'-???????819867-21-5C22H31O2P
2,5-Dimethyl-1-phenyl-1H-pyrrole-3-carbaldehyde2,5-???-1-????-3-????????83-18-1C13H13NO
2-Methyloctan-1-ol818-81-5C9H20O
Pyruvic acid (manganese)????????81686-75-1C3H4MnO3
Xanthoxyletin84-99-1C15H14O4
2,5-Difluorobenzene-1-thiol2,5-?????????77380-28-0C6H4F2S
4,4'-(Propane-1,3-diylbis(oxy))bis(benzene-1,3-diamine)1,3-??-(2,4-????????)???81892-72-0C15H20N4O2
2-(2-(Piperazin-1-yl)ethoxy)ethan-1-ol dihydrochloride1-[2(2-???????)??]?????????????85293-16-9C8H20Cl2N2O2
H-Pro-Asp-OHH-??-ASP-?85227-98-1C9H14N2O5
4,6-Bis(difluoromethoxy)pyrimidin-2-amine86209-44-1C6H5F4N3O2
N-Methyl-1-(4-nitrophenyl)methanesulfonamideN-??-1-(4-?????)???????85952-29-0C8H10N2O4S
4,5-Difluoro-2-methyl-1h-indole4,5-?????-2-????85462-60-8C9H7F2N
H-Arg-OtBu (dihydrochloride)L-????T-?????????????87459-72-1C10H23ClN4O2
N-((E)-3-(1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)allyl)-2,2,2-trifluoroacetamide(E)-5-[3-(????????????)-1-????]???869222-68-4C14H16F3N3O7
Ethyl 3-(4-(2-(5-ethylpyridin-2-yl)ethoxy)phenyl)propanoate (Pioglitazone Impurity)4-[2-(5-??-2-????)???]????????????(?????????)868754-42-1C20H25NO3
2-Methoxybiphenyl86-26-0C13H12O
3-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonamide3-??-1-(3'-???????)-5-????89-29-2C10H11N3O3S
2-Hydrazinyl-5-(trifluoromethyl)pyridine5-(????????)???-2-YLHYDRAZINE89570-85-4C6H6F3N3
Benzyl mandelate??DL??890-98-2C15H14O3
2,2'-(3-Ethylpyrazine-2,5-diyl)bis(ethan-1-ol) (Clavulanic acid Impurtiy)3-??-2,5-???????86917-74-0C10H16N2O2
3-Methylsulfolane872-93-5C5H10O2S
2-Methoxy-5-(trifluoromethoxy)benzonitrile2-???-5-?????????-?????886500-03-4C9H6F3NO2
(1-Tosyl-1H-pyrrolo[2,3-b]pyridin-3-yl)boronic acid1-??-1H-???[2,3-b]???-3-????882562-39-2C14H13BN2O4S
3-Piperidinopropiophenone (hydrochloride)1-(2-?????)??????????886-06-6C14H20ClNO
Methyl 2,6-dichloro-5-methoxypyrimidine-4-carboxylate??2,6-????-5-???????-4-???????878650-31-8C7H6Cl2N2O3
2-Borono-4-fluorobenzoic acid2-????-5-?????????874290-62-7C7H6BFO4
4-Ethyl-1-iodo-2-methylbenzene4-??-1-???-2-????866996-02-3C9H11I
4,5,6,7-tetrahydro-1H-pyrazolo pyridine hydrochloride871726-74-8C6H11Cl2N3
6-Chloro-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine1H-???[2,3-b]???,6-???-1-(?????)-896722-50-2C13H9ClN2O2S
1,2,4-Triethylbenzene1,2,4-??????877-44-1C12H18
3,5,4'-Tribromosalicylanilide3,4',5-?????????????(???????)87-10-5C13H8Br3NO2
4-Bromo-2-chloro-3-iodopyridine4-???-2-???-3-??????916203-52-6C5H2BrClIN
2-(4-Methoxyphenyl)thiazole-5-carbaldehyde2-(4-?????)???-5-??????914348-82-6C11H9NO2S
2-((2-Acetamido-6-oxo-3H-purin-7(6H)-yl)methoxy)ethyl acetate (Acyclovir/Aciclovir Impurity)AcyclovirEP???M91702-60-2C12H15N5O5
(R)-5-Benzyl 1-tert-butyl 2-aminopentanedioate hydrochloride90159-60-7C16H24ClNO4
3-Methylquinoxaline-5-carboxylic acid3-??-????-5-?????904813-39-4C10H8N2O2
2-((Allyloxy)methyl)-2-(hydroxymethyl)propane-1,3-diol1,3-?????,2,2-??(??????)-,?????91648-24-7C14H24O4
2-Chloro-6,7-dimethoxyquinazoline2-???-6,7-????????94644-47-0C10H9ClN2O2
(2R,4R)-1-[(2S)-5-[(Aminoiminomethyl)amino]-2-[[(3- methyl-8-quinolinyl)sulfonyl]amino]-1-oxopentyl]-4-methyl-2-piperidinecarboxylic Acid (Afatinib Impurity）951130-92-0C23H32N6O5S
trans(trans)]-4,4'-(Azanediylbis(methylene))dicyclohexanecarboxylic acid (Tranexamic Acid Impurity)???-???-4,4'-????????(??????????)93940-19-3C16H27NO4
6-Methoxypicolinamide6-???-???-2-????????98276-69-8C7H8N2O2
1-[(4-tert-Butylphenyl)methyl]piperazine1-(4-???-????)????956-61-6C15H24N2
2-(4-(Dimethylamino)phenyl)thiazole-4-carboxylic acid2-(4-(??????)??)???-4-?????955400-50-7C12H12N2O2S
Crisaborole Impurity 116943311-78-2C19H18BrNO3
(2S,4R)-1-(tert-Butoxycarbonyl)-4-(3-fluorobenzyl)pyrrolidine-2-carboxylic acid959579-74-9C17H22FNO4
N-(1-amino-5-guanidino-1-oxopentan-2-yl)benzamide hydrochloride hydrate965-03-7C13H19N5O2
Methyl 4-((5-bromopyrimidin-2-yl)oxy)benzoate5-???-2-[(4-???????)???]????926304-76-9C12H9BrN2O3
N-Carbamothioyl-2-(5-oxo-1-propylpyrrolidin-2-yl)acetamide (Pramipexole Impurity）N-(????????)-5-??-1-???-2-??????????936751-11-0C10H17N3O2S
2-(6-Bromopyridin-3-yl)pyrimidine2-(6-BroMo-???-3-?)????942189-65-3C9H6BrN3
(E)-O-(3-Chloro-2-propenyl)hydroxylamine hydrochloride(E)-O-(3-???-2-????)??????????96992-71-1C3H7Cl2NO
(4-(Methoxymethyl)cyclohexyl)methanol4-(?????)?????????98955-27-2C9H18O2
2-(4-Acetylbenzyl)cyclopentanone (Loxoprofen Impurity)2-[(4-?????)??]??????-1-?96824-28-1C14H16O2
2,2',4,4'-Tetrahydroxydiphenyl Sulfide????????97-29-0C12H10O4S
1-(4-(tert-Butyl)phenyl)-4-(4-hydroxypiperidin-1-yl)butan-1-one (Ebastine Impurity)1-[3-(4-tert-?????)???]-4-????????97928-18-2C19H29NO2
(2-(Piperidin-1-ylsulfonyl)phenyl)boronic acid957034-87-6C11H16BNO4S
Naphthalene-2,7-disulfonic acid????-2,7-????92-41-1C10H8O6S2
N2-(tert-butoxycarbonyl)-N6-(2,2,2-trifluoroacetyl)-D-lysineBOC-D-LYS(TFA)-?96561-04-5C13H21F3N2O5
1-Methoxyindole-3-carboxylic acid1-?????-3-?????91913-76-7C10H9NO3
Boc-N-Amido-PEG2-C2-azidet-Boc-N-???-PEG2-????950683-55-3C11H22N4O4
N,N′-(6,6′-Dihydroxy[1,1′-biphenyl]-3,3′-diyl)bis[acetamide2,2'-?????-5,5'-??????????98966-14-4C16H16N2O4
2-Aminothiazole-5-carbaldehyde hydrochloride2-???-5-??????HCL920313-27-5C4H5ClN2OS
(Ferrocenylmethyl)dodecyldimethylammonium (bromide)(??????)?????????????98778-40-6C25H33BrFeN
N1,N1,3-Trimethylbutane-1,3-diamineN1,N1,3-??????-1,3-???933738-55-7C7H18N2
1,4-Bis((trimethylsilyl)oxy)benzene1,4-??(???????)??90162-40-6C12H22O6Si2
Glycylalanine???-DL-???926-77-2C5H10N2O3
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