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Cysteine [Cys] Amino Acids & Derivatives

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  • S-Trityl-D-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    D-Cys(Trt)-OH
    Catalog Number:
    05952
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    25840-82-8
    MDL NO:
    MFCD00236948
    Molecular Formula:
    C22H21NO2S
    Molecular Weight:
    363.5
  • S-4-Methoxybenzyl-D-cysteine

    Purity:
    ≥ 97% (HPLC)
    Synonym:
    D-Cys(pMeOBzl)-OH
    Catalog Number:
    05950
    Purity Limit:
    ≥ 97% (HPLC)
    CAS Number:
    58290-34-9
    MDL NO:
    MFCD00236946
    Molecular Formula:
    C11H15NO3S
    Molecular Weight:
    241.3
  • S-Benzyl-L-cysteine 4-nitroanilide

    Purity:
    ≥ 98% (TLC)
    Synonym:
    L-Cys(Bzl)-pNA
    Catalog Number:
    05915
    Purity Limit:
    ≥ 98% (TLC)
    CAS Number:
    7436-62-6
    MDL NO:
    MFCD00007302
    Molecular Formula:
    C16H17N3O3S
    Molecular Weight:
    331.43
  • S-Benzyl-L-cysteine ethyl ester hydrochloride

    Purity:
    ≥ 99% (TLC)
    Synonym:
    L-Cys(Bzl)-OEt·HCl
    Catalog Number:
    05914
    Purity Limit:
    ≥ 99% (TLC)
    CAS Number:
    52844-67-4
    MDL NO:
    MFCD00038909
    Molecular Formula:
    C12H17NO2S·HCl
    Molecular Weight:
    275.8
  • S-Benzyl-L-cysteine β-naphthylamide

    Purity:
    99%
    Synonym:
    L-Cys(Bzl)-βNA
    Catalog Number:
    05916
    Purity Limit:
    99%
    CAS Number:
    7436-63-7
    MDL NO:
    MFCD00021595
    Molecular Formula:
    C20H20N2OS
    Molecular Weight:
    336.45
  • S-9-Fluorenylmethyl-L-cysteine hydrochloride

    Purity:
    ≥ 99% (TLC)
    Synonym:
    L-Cys(Fm)-OH·HCl
    Catalog Number:
    05918
    Purity Limit:
    ≥ 99% (TLC)
    CAS Number:
    84888-34-6
    MDL NO:
    MFCD00236944
    Molecular Formula:
    C17H17NO2S·HCl
    Molecular Weight:
    335.88
  • S-Trityl-L-cysteine amide

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Cys(Trt)-NH2
    Catalog Number:
    05920
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    166737-85-5
    MDL NO:
    MFCD22126061
    Molecular Formula:
    C22H22N2OS
    Molecular Weight:
    362.5
  • S-Diphenylmethyl-L-cysteine

    Purity:
    ≥ 99% (TLC)
    Synonym:
    L-Cys(Dpm)-OH
    Catalog Number:
    05917
    Purity Limit:
    ≥ 99% (TLC)
    CAS Number:
    5191-80-0
    MDL NO:
    MFCD00065211
    Molecular Formula:
    C16H17NO2S
    Molecular Weight:
    287.38
  • S-Benzyl-L-cysteine benzyl ester 4-toluenesulfonate salt

    Purity:
    ≥ 99% (TLC)
    Synonym:
    L-Cys(Bzl)-OBzl·TosOH
    Catalog Number:
    05913
    Purity Limit:
    ≥ 99% (TLC)
    CAS Number:
    73995-16-1
    MDL NO:
    MFCD00038984
    Molecular Formula:
    C17H19NO2S·C7H8O3S
    Molecular Weight:
    473.59
  • Fmoc-S-tert-butyl-D-cysteine

    Purity:
    ≥ 97% (HPLC)
    Synonym:
    Fmoc-D-Cys(tBu)-OH
    Catalog Number:
    05696
    Purity Limit:
    ≥ 97% (HPLC)
    CAS Number:
    131766-22-8
    MDL NO:
    MFCD00077052
    Molecular Formula:
    C22H25NO4S
    Molecular Weight:
    399.5
  • Fmoc-S-tert-butylthio-D-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-D-Cys(StBu)-OH
    Catalog Number:
    05695
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    501326-55-2
    MDL NO:
    MFCD01632050
    Molecular Formula:
    C22H25NO4S2
    Molecular Weight:
    431.6
  • Fmoc-S-2-hydroxyethyl-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Cys(2-hydroxyethyl)-OH
    Catalog Number:
    05682
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    200354-35-4
    MDL NO:
    MFCD00672330
    Molecular Formula:
    C20H21NO5S
    Molecular Weight:
    387.46
  • Fmoc-S-4-methylbenzyl-D-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-D-Cys(pMeBzl)-OH
    Catalog Number:
    05693
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    200354-41-2
    MDL NO:
    MFCD00237013
    Molecular Formula:
    C26H25NO4S
    Molecular Weight:
    447.6
  • Boc-S-trityl-D-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Boc-D-Cys(Trt)-OH
    Catalog Number:
    05484
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    87494-13-1
    MDL NO:
    MFCD00236839
    Molecular Formula:
    C27H29NO4S
    Molecular Weight:
    463.57
  • Boc-S-ethyl-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Boc-L-Cys(Et)-OH
    Catalog Number:
    05466
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    16947-82-3
    MDL NO:
    MFCD00076919
    Molecular Formula:
    C10H19NO4S
    Molecular Weight:
    249.3
  • Boc-S-4-methoxybenzyl-D-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Boc-D-Cys(pMeOBzl)-OH
    Catalog Number:
    05483
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    58290-35-0
    MDL NO:
    MFCD00076922
    Molecular Formula:
    C16H23NO5S
    Molecular Weight:
    341.4
  • Boc-S-Z-aminoethyl-L-cysteine

    Purity:
    ≥ 99% (TLC)
    Synonym:
    Boc-L-Cys(Z-NHEt)-OH
    Catalog Number:
    05469
    Purity Limit:
    ≥ 99% (TLC)
    CAS Number:
    85003-76-5
    MDL NO:
    MFCD00236840
    Molecular Formula:
    C18H26N2O6S
    Molecular Weight:
    398.48
  • Boc-S-methyl-L-cysteine

    Purity:
    ≥ 97%
    Synonym:
    Boc-L-Cys(Me)-OH
    Catalog Number:
    05468
    Purity Limit:
    ≥ 97%
    CAS Number:
    16947-80-1
    MDL NO:
    MFCD00076923
    Molecular Formula:
    C9H17NO4S
    Molecular Weight:
    235.7
  • Boc-S-9-fluorenylmethyl-L-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Boc-L-Cys(Fm)-OH
    Catalog Number:
    05467
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    84888-35-7
    MDL NO:
    MFCD00076921
    Molecular Formula:
    C22H25NO4S
    Molecular Weight:
    399.51
  • Boc-S-3,4-dimethylbenzyl-L-cysteine

    Purity:
    ≥ 98% (TLC)
    Synonym:
    Boc-L-Cys(3,4-dimethylBzl)-OH
    Catalog Number:
    05465
    Purity Limit:
    ≥ 98% (TLC)
    CAS Number:
    41117-66-2
    MDL NO:
    MFCD00060743
    Molecular Formula:
    C17H25NO4S
    Molecular Weight:
    339.46
  • N,S-di-Z-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Z-L-Cys(Z)-OH
    Catalog Number:
    05386
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    57912-35-3
    MDL NO:
    MFCD00037823
    Molecular Formula:
    C19H19NO6S
    Molecular Weight:
    389.4
  • Boc-S-acetamidomethyl-D-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Boc-D-Cys(Acm)-OH
    Catalog Number:
    05352
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    138775-00-5
    MDL NO:
    MFCD00076917
    Molecular Formula:
    C11H20N2O5S
    Molecular Weight:
    292.3
  • Boc-S-benzyl-D-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Boc-D-Cys(Bzl)-OH
    Catalog Number:
    05298
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    102830-49-9
    MDL NO:
    MFCD00038253
    Molecular Formula:
    C15H21NO4S
    Molecular Weight:
    311.4
  • Boc-S-tert-butyl-L-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Boc-L-Cys(tBu)-OH
    Catalog Number:
    05296
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    56976-06-8
    MDL NO:
    MFCD00076918
    Molecular Formula:
    C12H23NO4S
    Molecular Weight:
    277.4
  • S-Acetamidomethyl-D-cysteine hydrochloride

    Purity:
    ≥ 98%
    Synonym:
    S-Acetamidomethyl-D-cysteine hydrochloride
    Catalog Number:
    04425
    Purity Limit:
    ≥ 98%
    CAS Number:
    200352-41-6
    MDL NO:
    MFCD00043380
    Molecular Formula:
    C6H12N2O3S·HCl
    Molecular Weight:
    228.7
  • Palmitoyl-S-[2,3-bis(palmitoyloxy)-(2RS-propyl]-L-cysteine

    Purity:
    ≥ 98% (TLC)
    Synonym:
    Pam-L-Cys[(2,3-bis-PamO)Pr]-OH
    Catalog Number:
    04423
    Purity Limit:
    ≥ 98% (TLC)
    CAS Number:
    70512-46-8
    MDL NO:
    MFCD00153468
    Molecular Formula:
    C54H103NO7S
    Molecular Weight:
    910.5
  • Acetyl-S-trityl-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Ac-L-Cys(Trt)-OH
    Catalog Number:
    04346
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    27486-87-9
    MDL NO:
    MFCD00236747
    Molecular Formula:
    C24H23NO3S
    Molecular Weight:
    405.52
  • Boc-S-benzyl-L-cysteine N-hydroxysuccinimide ester

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Boc-L-Cys(Bzl)-OSu
    Catalog Number:
    03969
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    85097-54-7
    MDL NO:
    MFCD00190786
    Molecular Formula:
    C19H24N2O6S
    Molecular Weight:
    408.47
  • Boc-S-4-methylbenzyl-D-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Boc-D-Cys(pMeBzl)-OH
    Catalog Number:
    03971
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    61925-78-8
    MDL NO:
    MFCD00076924
    Molecular Formula:
    C16H23NO4S
    Molecular Weight:
    325.4
  • Boc-S-4-methylbenzyl-L-cysteine N-hydroxysuccinimide ester

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Boc-L-Cys(pMeBzl)-OSu
    Catalog Number:
    03970
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    140842-91-7
    MDL NO:
    MFCD00236833
    Molecular Formula:
    C20H26N2O6S
    Molecular Weight:
    422.5
  • Boc-S-acetamidomethyl-L-cysteine 4-nitrophenyl ester

    Purity:
    ≥ 98% (Assay)
    Synonym:
    Boc-L-Cys(Acm)-ONp
    Catalog Number:
    03966
    Purity Limit:
    ≥ 98% (Assay)
    CAS Number:
    58651-76-6
    MDL NO:
    MFCD00236831
    Molecular Formula:
    C17H23N3O7S
    Molecular Weight:
    413.45
  • Boc-S-3-nitro-2-pyridinesulfenyl-L-cysteine

    Purity:
    ≥ 98.5%
    Synonym:
    Boc-L-Cys(Npys)-OH
    Catalog Number:
    03823
    Purity Limit:
    ≥ 98.5%
    CAS Number:
    76880-29-0
    MDL NO:
    MFCD00153301
    Molecular Formula:
    C13H17N3O6S2
    Molecular Weight:
    375.43
  • Fmoc-S-3-nitro-2-pyridine-sulfenyl-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Cys(Npys)-OH
    Catalog Number:
    03770
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    159700-51-3
    MDL NO:
    MFCD00065638
    Molecular Formula:
    C24H21N2O4S2
    Molecular Weight:
    497.54
  • Fmoc-S-ethyl-L-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Fmoc-L-Cys(Et)-OH
    Catalog Number:
    03769
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    200354-34-3
    MDL NO:
    MFCD00151921
    Molecular Formula:
    C20H21NO4S
    Molecular Weight:
    371.5
  • Fmoc-S-acetamidomethyl-D-cysteine

    Purity:
    ≥ 99.5% (Chiral HPLC)
    Synonym:
    Fmoc-D-Cys(Acm)-OH
    Catalog Number:
    03700
    Purity Limit:
    ≥ 99.5% (Chiral HPLC)
    CAS Number:
    168300-88-7
    MDL NO:
    MFCD00077053
    Molecular Formula:
    C21H22N2O5S
    Molecular Weight:
    414.5
  • Fmoc-S-[2,3-bis(palmitoyloxy)propyl]-L-cysteine

    Purity:
    ≥ 96% (HPLC)
    Synonym:
    Fmoc-Dhc(Pam)2-OH
    Catalog Number:
    03697
    Purity Limit:
    ≥ 96% (HPLC)
    CAS Number:
    210532-98-2
    MDL NO:
    MFCD00153354
    Molecular Formula:
    C53H83NO8S
    Molecular Weight:
    894.31
  • Fmoc-S-4-methoxytrityl-L-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Fmoc-L-Cys(Mmt)-OH
    Catalog Number:
    03699
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    177582-21-7
    MDL NO:
    MFCD00270541
    Molecular Formula:
    C38H33NO5S
    Molecular Weight:
    615.7
  • S-(2-Aminoethyl-L-cysteine hydrochloride

    Purity:
    ≥ 99% (TLC)
    Synonym:
    L-Cys(aminoethyl)-OH·HCl
    Catalog Number:
    03295
    Purity Limit:
    ≥ 99% (TLC)
    CAS Number:
    4099-35-8
    MDL NO:
    MFCD00036385
    Molecular Formula:
    C5H12N2O2S·HCl
    Molecular Weight:
    200.7
  • S-4-Methoxybenzyl-L-cysteine

    Purity:
    ≥ 99% (Assay by titration)
    Synonym:
    L-Cys(pMeOBzl)-OH
    Catalog Number:
    03053
    Purity Limit:
    ≥ 99% (Assay by titration)
    CAS Number:
    2544-31-2
    MDL NO:
    MFCD00037207
    Molecular Formula:
    C11H15NO3S
    Molecular Weight:
    241.3
  • S-Benzyl-D-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    D-Cys(Bzl)-OH
    Catalog Number:
    03048
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    23032-53-3
    MDL NO:
    MFCD00077103
    Molecular Formula:
    C10H13NO2S
    Molecular Weight:
    211.3
  • S-Benzyl-L-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    L-Cys(Bzl)-OH
    Catalog Number:
    03047
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    3054-01-1
    MDL NO:
    MFCD00002613
    Molecular Formula:
    C10H13NO2S
    Molecular Weight:
    211.3
  • S-Acetamidomethyl-L-cysteine hydrochloride

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    L-Cys(Acm)-OH·HCl
    Catalog Number:
    03046
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    28798-28-9
    MDL NO:
    MFCD00077080
    Molecular Formula:
    C6H12N2O3S·HCl
    Molecular Weight:
    228.7
  • S-4-Methylbenzyl-L-cysteine

    Synonym:
    L-Cys(pMeBzl)-OH
    Catalog Number:
    03054
    CAS Number:
    42294-52-0
    MDL NO:
    MFCD00038576
    Molecular Formula:
    C11H15NO2S
    Molecular Weight:
    225.3
  • S-tert-Butyl-L-cysteine hydrochloride

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    L-Cys(tBu)-OH·HCl
    Catalog Number:
    03050
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    2481-09-6
    MDL NO:
    MFCD00037426
    Molecular Formula:
    C7H15NO2S·HCl
    Molecular Weight:
    213.7
  • S-tert-Butylthio-L-cysteine

    Purity:
    ≥ 99.5% (Chiral purity)
    Synonym:
    L-Cys(StBu)-OH
    Catalog Number:
    03051
    Purity Limit:
    ≥ 99.5% (Chiral purity)
    CAS Number:
    30044-51-0
    MDL NO:
    MFCD00002609
    Molecular Formula:
    C7H15NO2S2
    Molecular Weight:
    209.3
  • S-Benzyl-L-cysteine methyl ester hydrochloride

    Purity:
    ≥ 96% (HPLC)
    Synonym:
    L-Cys(Bzl)-OMe·HCl
    Catalog Number:
    03049
    Purity Limit:
    ≥ 96% (HPLC)
    CAS Number:
    16741-80-3
    MDL NO:
    MFCD00034845
    Molecular Formula:
    C11H15NO2S·HCl
    Molecular Weight:
    261.8
  • Fmoc-S-4-methoxybenzyl-L-cysteine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Fmoc-L-Cys(pMeOBzl)-OH
    Catalog Number:
    02400
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    141892-41-3
    MDL NO:
    MFCD00065635
    Molecular Formula:
    C26H25NO5S
    Molecular Weight:
    463.6
  • Fmoc-S-tert-butylthio-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Cys(StBu)-OH
    Catalog Number:
    02403
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    73724-43-3
    MDL NO:
    MFCD00042617
    Molecular Formula:
    C22H25NO4S2
    Molecular Weight:
    431.6
  • Fmoc-S-acetamidomethyl-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Cys(Acm)-OH
    Catalog Number:
    02396
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    86060-81-3
    MDL NO:
    MFCD00038769
    Molecular Formula:
    C21H22N2O5S
    Molecular Weight:
    414.5
  • Fmoc-S-tert-butyl-L-cysteine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Fmoc-L-Cys(tBu)-OH
    Catalog Number:
    02401
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    67436-13-9
    MDL NO:
    MFCD00037130
    Molecular Formula:
    C22H25NO4S
    Molecular Weight:
    399.5