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    Cysteine Hydrochloride

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    2D Structure
    Also known as: 52-89-1, L-cysteine.hcl, L-cysteine hydrochloride anhydrous, L-cysteine, hydrochloride, L-cysteine hcl anhydrous, (r)-cysteine hydrochloride
    Molecular Formula
    C3H8ClNO2S
    Molecular Weight
    157.62  g/mol
    InChI Key
    IFQSXNOEEPCSLW-DKWTVANSSA-N
    FDA UNII
    A9U1687S1S
    A thiol-containing non-essential amino acid that is oxidized to form CYSTINE.
    1 2D Structure

    2D Structure

    2 Identification
    2.1 Computed Descriptors
    2.1.1 IUPAC Name
    (2R)-2-amino-3-sulfanylpropanoic acid;hydrochloride
    2.1.2 InChI
    InChI=1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1
    2.1.3 InChI Key
    IFQSXNOEEPCSLW-DKWTVANSSA-N
    2.1.4 Canonical SMILES
    C(C(C(=O)O)N)S.Cl
    2.1.5 Isomeric SMILES
    C([C@@H](C(=O)O)N)S.Cl
    2.2 Other Identifiers
    2.2.1 UNII
    A9U1687S1S
    2.3 Synonyms
    2.3.1 MeSH Synonyms

    1. Cysteine

    2. Cysteine Hydrochloride

    3. Half Cystine

    4. Half-cystine

    5. L Cysteine

    6. L-cysteine

    7. Zinc Cysteinate

    2.3.2 Depositor-Supplied Synonyms

    1. 52-89-1

    2. L-cysteine.hcl

    3. L-cysteine Hydrochloride Anhydrous

    4. L-cysteine, Hydrochloride

    5. L-cysteine Hcl Anhydrous

    6. (r)-cysteine Hydrochloride

    7. (r)-2-amino-3-mercaptopropanoic Acid Hydrochloride

    8. L-cysteine Hcl

    9. L-(+)-cysteine Hydrochloride

    10. Cysteine Hydrochloride

    11. Cysteine Monohydrochloride

    12. L-cysteine, Hcl

    13. L-cysteine Monohydrochloride

    14. Cysteine Hcl

    15. Cystein Chloride

    16. Cysteine Hcl (anhydrous)

    17. Cysteine Hydrochloride (anhydrous)

    18. Cysteine, L-, Hydrochloride

    19. Cysteine Hydrochloride Anhydrous

    20. L-cysteine, Hydrochloride (1:1)

    21. Cysteine Chlorhydrate

    22. L-cysteine (hydrochloride)

    23. H-cys-oh.hcl

    24. Nsc 8746

    25. A9u1687s1s

    26. 3-mercaptoalanine Hydrochloride

    27. Ek 2367

    28. Cysteine (as Hydrochloride)

    29. Ccris 3613

    30. Cysteine, L-, Monohydrochloride

    31. Nsc-755898

    32. Einecs 200-157-7

    33. Wr 348

    34. Cysteine-hcl

    35. Unii-a9u1687s1s

    36. Ai3-18781

    37. L-cysteine Hydrochloride, Anhydrous

    38. Mfcd00064553

    39. Cysteine-hydrochloride

    40. L-cysteinium Chloride

    41. H-cys-oh?cl

    42. L-cysteine Chlorhydrate

    43. Dsstox_cid_367

    44. L-cysteine Hydro-chloride

    45. L-cysteine Hydrochloride;

    46. Ec 200-157-7

    47. Dsstox_rid_75543

    48. Dsstox_gsid_20367

    49. Schembl18161

    50. L-cysteinemethyl Hydrochloride

    51. L-2-amino-3-mercaptopropanoic Acid Monohydrochloride

    52. Chembl1200630

    53. Dtxsid0020367

    54. Chebi:91247

    55. Hy-y0337a

    56. Tox21_200699

    57. S4815

    58. Akos015849225

    59. Ccg-266272

    60. Cs-w018517

    61. Cysteine Hydrochloride [who-dd]

    62. Cas-52-89-1

    63. Cysteine Hydrochloride, Anhydrous

    64. (r)-(+)-cysteine Hydrochloride Hydrate

    65. Ncgc00258253-01

    66. (2r)-2-amino-3-mercapto-propionic Acid

    67. Ac-12796

    68. As-11682

    69. L-cysteine Hydrochloride [usp-rs]

    70. L-cysteine Hydrochloride, 98.0-102.0%

    71. Cysteine Hydrochloride Anhydrous [ii]

    72. Cysteine Hydrochloride Anhydrous [mi]

    73. (r)2-amino-3-thiopropanoic Acid Hydrochloride

    74. E72644

    75. (r)-2-amino-3-mercaptopropanoicacidhydrochloride

    76. 064c553

    77. A829298

    78. (1r)-1-carboxy-2-sulfanylethan-1-aminium Chloride

    79. (2r)-2-amino-3-sulfanylpropanoic Acid;hydrochloride

    80. J-019666

    81. L-cysteine Hydrochloride, Anhydrous, >=98% (tlc)

    82. W-105789

    83. L-cysteine Hydrochloride, Anhydrous, >=99.0% (rt)

    84. Q27163158

    85. L-cysteine Hydrochloride, Fg, Product Of Wacker Chemie Ag

    86. L-cysteine Hydrochloride, Vetec(tm) Reagent Grade, >=98%

    87. (2r)-2-amino-3-sulfanyl-propanoic Acid Hydrochloride;h-cys-oh.hcl

    88. L-cysteine Hydrochloride, Anhydrous, From Non-animal Source, Bioreagent, Suitable For Cell Culture, >=98.0%

    2.4 Create Date
    2005-07-19
    3 Chemical and Physical Properties
    Molecular Weight 157.62 g/mol
    Molecular Formula C3H8ClNO2S
    Hydrogen Bond Donor Count4
    Hydrogen Bond Acceptor Count4
    Rotatable Bond Count2
    Exact Mass156.9964274 g/mol
    Monoisotopic Mass156.9964274 g/mol
    Topological Polar Surface Area64.3 Ų
    Heavy Atom Count8
    Formal Charge0
    Complexity75.3
    Isotope Atom Count0
    Defined Atom Stereocenter Count1
    Undefined Atom Stereocenter Count0
    Defined Bond Stereocenter Count0
    Undefined Bond Stereocenter Count0
    Covalently Bonded Unit Count2