Cysteine derivatives

Cysteine derivative is sulfur - containing amino acid belonging to aliphatic. Cysteine derivative is colorless crystal, soluble in water, ethanol and ammonia, and in aqueous solution is neutral. Cysteine derivative can be synthesized in vivo; two molecules of cysteine can be converted into cystine in neutral or slightly alkaline solution. Cystine is the composition of glutathione; the residue of the sulfhydryl of Cystine is an essential gene for certain enzymes, in the liver can generate taurine. Cysteine derivative is used as adjuvant therapy for hepatitis and antidote in clinic.
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Structure Chemical Name CAS MF
S-tert-Butyl-L-cysteine hydrochloride S-tert-Butyl-L-cysteine hydrochloride 2481-09-6 C7H16ClNO2S
Boc-S-(4-methylbenzyl)-L-cysteine Boc-S-(4-methylbenzyl)-L-cysteine 61925-77-7 C16H23NO4S
BOC-CYS-OH BOC-CYS-OH 20887-95-0 C8H15NO4S
Fmoc-S-acetamidomethyl-L-cysteine Fmoc-S-acetamidomethyl-L-cysteine 86060-81-3 C21H22N2O5S
FMOC-S-trityl-L-cysteine FMOC-S-trityl-L-cysteine 103213-32-7 C37H31NO4S
DL-Homocysteine DL-Homocysteine 454-29-5 C4H9NO2S
BOC-CYS(ACM)-ONP BOC-CYS(ACM)-ONP 58651-76-6 C17H23N3O7S
L-Cysteine methyl ester hydrochloride L-Cysteine methyl ester hydrochloride 18598-63-5 C4H10ClNO2S
Z-CYS(BZL)-OH Z-CYS(BZL)-OH 3257-18-9 C18H19NO4S
BOC-CYS(4-MEOBZL)-OH BOC-CYS(4-MEOBZL)-OH 18942-46-6 C16H23NO5S
S-Methyl-L-cysteine S-Methyl-L-cysteine 1187-84-4 C4H9NO2S
N-Boc-S-Trityl-L-cysteine N-Boc-S-Trityl-L-cysteine 21947-98-8 C27H29NO4S
DL-Homocysteinethiolactone hydrochloride DL-Homocysteinethiolactone hydrochloride 6038-19-3 C4H8ClNOS
H-CYS(BZL)-OME HCL H-CYS(BZL)-OME HCL 16741-80-3 C11H16ClNO2S
BOC-CYS(ACM)-OH BOC-CYS(ACM)-OH 19746-37-3 C11H20N2O5S
Fmoc-Cys(tBu)-OH Fmoc-Cys(tBu)-OH 67436-13-9 C22H25NO4S
S-ALLYL-L-CYSTEINE S-ALLYL-L-CYSTEINE 21593-77-1 C6H11NO2S
S-Phenyl-L-cysteine S-Phenyl-L-cysteine 34317-61-8 C9H11NO2S
3-(N-ACETYL-L-CYSTEIN-S-YL) ACETAMINOPHEN, SODIUM SALT 3-(N-ACETYL-L-CYSTEIN-S-YL) ACETAMINOPHEN, SODIUM SALT 52372-86-8 C13H16N2O5S
BOC-CYS(TBU)-OH BOC-CYS(TBU)-OH 56976-06-8 C12H23NO4S
N-ACETYL-S-GERANYLGERANYL-L-CYSTEINE N-ACETYL-S-GERANYLGERANYL-L-CYSTEINE 139332-94-8 C25H41NO3S
L-HOMOCYSTEINE L-HOMOCYSTEINE 6027-13-0 C4H9NO2S
S-2-Hydroxyethyl-L-cysteine S-2-Hydroxyethyl-L-cysteine 6367-98-2 C5H11NO3S
N-ACETYL-S-BENZYL-L-CYSTEINE N-ACETYL-S-BENZYL-L-CYSTEINE 19542-77-9 C12H15NO3S
Boc-S-trityl-D-cysteine Boc-S-trityl-D-cysteine 87494-13-1 C27H29NO4S
S-Methyl-L-cysteine sulfoxide S-Methyl-L-cysteine sulfoxide 6853-87-8 C4H9NO3S
FMOC-CYS(2-HYDROXYETHYL)-OH FMOC-CYS(2-HYDROXYETHYL)-OH 200354-35-4 C20H21NO5S
FMOC-CYS(ME)-OH FMOC-CYS(ME)-OH 138021-87-1 C19H19NO4S
BOC-CYS(FM)-OH BOC-CYS(FM)-OH 84888-35-7 C22H25NO4S
BOC-CYS(ET)-OH BOC-CYS(ET)-OH 16947-82-3 C10H19NO4S
FMOC-CYS(MMT)-OH FMOC-CYS(MMT)-OH 177582-21-7 C38H33NO5S
S-Cbz-L-cysteine S-Cbz-L-cysteine 1625-72-5 C11H13NO4S
S-CARBOXYMETHYL-L-CYSTEINE S-CARBOXYMETHYL-L-CYSTEINE 186537-58-6 C22H24N2O8S2
D-CYSTEINE HYDROCHLORIDE D-CYSTEINE HYDROCHLORIDE 207121-46-8 C3H10ClNO3S
S-Benzyl-L-cysteine S-Benzyl-L-cysteine 3054-01-1 C10H13NO2S
L-Cysteine ethyl ester hydrochloride L-Cysteine ethyl ester hydrochloride 868-59-7 C5H12ClNO2S
FMOC-CYS(BZL)-OH FMOC-CYS(BZL)-OH 53298-33-2 C25H23NO4S
CBZ-S-Phenyl-L-cysteine CBZ-S-Phenyl-L-cysteine 159453-24-4 C17H17NO4S
DL-Cysteine DL-Cysteine 3374-22-9 C3H7NO2S
L-Cysteine monohydrochloride L-Cysteine monohydrochloride 52-89-1 C3H8ClNO2S
FMOC-CYS(4-MBZL)-OH FMOC-CYS(4-MBZL)-OH 136050-67-4 C26H25NO4S
S-Trityl-L-cysteine S-Trityl-L-cysteine 2799-07-7 C22H21NO2S
2-Amino-3-[(4-methoxybenzyl)thio]propanoic acid 2-Amino-3-[(4-methoxybenzyl)thio]propanoic acid 2544-31-2 C11H15NO3S
DL-Cysteine hydrochloride monohydrate DL-Cysteine hydrochloride monohydrate 96998-61-7 C3H10ClNO3S
N-ACETYL-S-BENZYL-DL-CYSTEINE N-ACETYL-S-BENZYL-DL-CYSTEINE 19538-71-7 C12H15NO3S
D-Cysteine hydrochloride D-Cysteine hydrochloride 32443-99-5 C3H7NO2S.ClH.H2O
N-Fmoc-S-trityl-D-cysteine N-Fmoc-S-trityl-D-cysteine 167015-11-4 C37H31NO4S
S-tert-Butylmercapto-l-cysteine S-tert-Butylmercapto-l-cysteine 30044-51-0 C7H15NO2S2
DL-Cysteine hydrochloride DL-Cysteine hydrochloride 10318-18-0 C3H8ClNO2S
FMOC-CYS(ACM)-OPFP FMOC-CYS(ACM)-OPFP 86060-96-0 C27H21F5N2O5S
FMOC-CYS(TRT)-OPFP FMOC-CYS(TRT)-OPFP 115520-21-3 C43H30F5NO4S
N-CARBOBENZYLOXY-S-PHENYL-L-CYSTEINE N-CARBOBENZYLOXY-S-PHENYL-L-CYSTEINE 82611-65-2 C17H17NO4S
N-Fmoc-S-(4-methoxybenzyl)-L-cysteine N-Fmoc-S-(4-methoxybenzyl)-L-cysteine 141892-41-3 C26H25NO5S
L-Cysteine hydrochloride monohydrate L-Cysteine hydrochloride monohydrate 7048-04-6 C3H10ClNO3S
L-CYSTEINE-GLUTATHIONE DISULFIDE L-CYSTEINE-GLUTATHIONE DISULFIDE 13081-14-6 C13H22N4O8S2
FMOC-CYS(SO3H)-OH DISODIUM SALT FMOC-CYS(SO3H)-OH DISODIUM SALT 163558-30-3 C18H18NNaO7S2
L-Lysine S-(carboxymethyl)-L-cysteine L-Lysine S-(carboxymethyl)-L-cysteine 49673-81-6 C11H23N3O6S
N-(TERT-BUTOXYCARBONYL)-L-CYSTEINE METHYL ESTER N-(TERT-BUTOXYCARBONYL)-L-CYSTEINE METHYL ESTER 55757-46-5 C9H17NO4S
S-(2-THIAZOLYL)-L-CYSTEINE S-(2-THIAZOLYL)-L-CYSTEINE 405150-20-1 C6H8N2O2S2
DL-Propargyl-cysteine DL-Propargyl-cysteine C6H9NO2S
S-Allyl-D-cysteine S-Allyl-D-cysteine 770742-93-3 C6H11NO2S
D-S-tert-Butylcysteine D-S-tert-Butylcysteine 2481-10-9 C7H15NO2S
N-ACETYL-S-(3,4-DIHYDROXYBUTYL)-L-CYSTEINE N-ACETYL-S-(3,4-DIHYDROXYBUTYL)-L-CYSTEINE 144889-50-9 C9H17NO5S
(R)-2-METHYLCYSTEINE HYDROCHLORIDE (R)-2-METHYLCYSTEINE HYDROCHLORIDE 148766-37-4 C4H10ClNO2S
D-Cysteine ethyl ester hydrochloride D-Cysteine ethyl ester hydrochloride C5H12ClNO2S
D-S-Isoamylcysteine D-S-Isoamylcysteine 312746-71-7 C8H17NO2S
S-(4-NITROPHENYL)-L-CYSTEINE S-(4-NITROPHENYL)-L-CYSTEINE 55288-30-7 C9H10N2O4S
N-Methyl-L-Cysteine N-Methyl-L-Cysteine C4H9NO2S
S-Allyl-D-Cysteine S-Allyl-D-Cysteine C6H11NO2S
S-SULFO-L-CYSTEINE SODIUM SALT S-SULFO-L-CYSTEINE SODIUM SALT 1637-71-4 C3H7NO5S2
S,N-diacetylcysteine monoethyl ester S,N-diacetylcysteine monoethyl ester 19547-89-8 C9H15NO4S
D-CYSTEINE(MBZL)-OH D-CYSTEINE(MBZL)-OH 127348-02-1 C11H15NO2S
N-ACETYL-S-BENZYL-D-CYSTEINE N-ACETYL-S-BENZYL-D-CYSTEINE 161512-71-6 C12H15NO3S
L-CYSTEINE (15N) L-CYSTEINE (15N) 204523-09-1 C3H7NO2S
FMOC-CYS(TBU)-OPFP FMOC-CYS(TBU)-OPFP 109434-23-3 C28H24F5NO4S
AFC AFC 135304-07-3 C20H33NO3S
N-ACETYL-S-(4-NITROPHENYL)-L-CYSTEINE N-ACETYL-S-(4-NITROPHENYL)-L-CYSTEINE 91088-55-0 C11H12N2O5S
5'-DEOXY-S-ADENOSYL-L-HOMOCYSTEINE 5'-DEOXY-S-ADENOSYL-L-HOMOCYSTEINE 979-92-0 C14H20N6O5S
D-Homocysteine D-Homocysteine C4H9NO2S
Boc-S-4-methoxybenzyl-D-cysteine Boc-S-4-methoxybenzyl-D-cysteine 58290-35-0 C16H23NO5S
N-CARBAMOYL-L-CYSTEINE N-CARBAMOYL-L-CYSTEINE 24583-23-1 C4H8N2O3S
BOC-S-TERT-BUTYLMERCAPTO-L-CYSTEINE BOC-S-TERT-BUTYLMERCAPTO-L-CYSTEINE 30044-61-2 C12H23NO4S2
S-[N-(3-PHENYLPROPYL)(THIOCARBAMOYL)]-L-CYSTEINE S-[N-(3-PHENYLPROPYL)(THIOCARBAMOYL)]-L-CYSTEINE 137915-13-0 C13H18N2O2S2
S-ETHYL-L-CYSTEINE S-ETHYL-L-CYSTEINE 2629-59-6 C5H11NO2S
D-Cysteine methyl ester hydrochloride D-Cysteine methyl ester hydrochloride C4H10ClNO2S
FMOC-CYS(MTT)-OH FMOC-CYS(MTT)-OH 269067-38-1 C38H33NO4S
S-2-Hydroxyethyl-D-cysteine S-2-Hydroxyethyl-D-cysteine 85955-36-8 C5H11NO3S
H-CYS(BZL)-OET HCL H-CYS(BZL)-OET HCL 52844-67-4 C12H18ClNO2S
S-[2-(4-PYRIDYL)ETHYL]-L-CYSTEINE S-[2-(4-PYRIDYL)ETHYL]-L-CYSTEINE 28809-04-3 C10H14N2O2S
BOC-CYS(ME)-OH BOC-CYS(ME)-OH 16947-80-1 C9H17NO4S
PAM3-CYS-ALA-GLY-OH PAM3-CYS-ALA-GLY-OH 117858-54-5 C59H111N3O9S
S-METHYL-L-CYSTEINE METHYL ESTER HYDROCHLORIDE S-METHYL-L-CYSTEINE METHYL ESTER HYDROCHLORIDE 34017-27-1 C5H12ClNO2S
FMOC-HOMOCYS(TRT)-OH FMOC-HOMOCYS(TRT)-OH 167015-23-8 C38H33NO4S
N-(2-NITROPHENYLSULFENYL)-S-BENZYL-L-CYSTEINE DICYCLOHEXYLAMMONIUM SALT N-(2-NITROPHENYLSULFENYL)-S-BENZYL-L-CYSTEINE DICYCLOHEXYLAMMONIUM SALT 7675-65-2 C28H39N3O4S2
S-Butyl-D-cysteine S-Butyl-D-cysteine 4134-56-9 C7H15NO2S
S-Trityl-D-cysteine S-Trityl-D-cysteine 25840-82-8 C22H21NO2S
EC EC 14344-48-0 C8H16N2O4S2
H-CYS(ACM)-OH HCL H-CYS(ACM)-OH HCL 28798-28-9 C6H13ClN2O3S
METHYL 2-AMINO-3-MERCAPTOPROPANOATE HYDROCHLORIDE METHYL 2-AMINO-3-MERCAPTOPROPANOATE HYDROCHLORIDE 70361-61-4 C4H10ClNO2S
N-ACETYL-S-BENZYL-L-CYSTEINE METHYL ESTER N-ACETYL-S-BENZYL-L-CYSTEINE METHYL ESTER 77549-14-5 C13H17NO3S
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