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CAS No 52-90-4 , (2R)-2-amino-3-sulfanylpropanoic acid Search by region : Germany

  • Name: (2R)-2-amino-3-sulfanylpropanoic acid
  • Synonyms: Half cystine; beta-Mercaptoalanine;(2R)-2-amino-3-sulfanylpropanoic acid; L-(+)-Cysteine; (R)-Cysteine; Half-cystine; cysteine;L-cysteine; 52-90-4; Thioserine; Cystein;
  • CAS Registry Number:
  • Melting Point: 220 ºC
  • Density: 1.334 g/cm3
  • Refractive index: 8.8 ° (C=8, 1mol/L HCl)
  • Alpha: 8.75 º (C=12, 2N HCL)
  • Water Solubility: 280 G/L (25 ºC)
  • Safety Statements: R22;R36/37/38
  • Hazard Symbols: Xn: Harmful;
  • HS Code: 29309012
  • EINECS: 200-158-2
  • Molecular Weight: 121.15818
  • InchiKey: XUJNEKJLAYXESH-REOHCLBHSA-N
  • InChI: InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
  • Risk Statements: S26;S37/39
  • Molecular Formula: C3H7NO2S
  • Molecular Structure:CAS No:52-90-4 (2R)-2-amino-3-sulfanylpropanoic acid

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52-90-4 D-Cysteine hydrochloride monohydrate

  • D-Cysteine hydrochloride monohydrate
  • Germany chemcube UG [Manufacturer]
  • Tel: +49 (22 08) 7 75 04 06
  • Fax: +49 (22 08) 7 75 02 30 /
    +49 (32 12) 1 00 74 76
  • Address: chemcube UG
    Salierweg 1
    53859 Niederkassel
    Germany null,nullGermany
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52-90-4 L-Cysteine.HCl

  • L-Cysteine.HCl
  • Germany Paragos [Manufacturer]
  • Tel: +49 69 41 09 21 91
  • Fax: +49 69 42 69 45 85
  • Address: Alt Fechenheim 3460386 Frankfurt/MainGERMANY Frankfurt/Main,nullGermany
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52-90-4 (R)-(+)-Cysteine

  • (R)-(+)-Cysteine2-Amino-3-mercaptopropionic acid
  • Germany Merck Schuchardt OHG [Manufacturers]
  • Tel: +49-(8102)-802-0
  • Fax: +49-(8102)-802-175
  • Address: Eduard-Buchner-Str. 14-20, Hohenbrunn 85662, Hohenbrunn,HohenbrunnGermany
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52-90-4 L-Cysteine hydrochloride monohydrate

  • L-Cysteine hydrochloride monohydrate
  • Germany Intatrade Chemicals null
  • Tel: ++49-3493-605464
  • Address: Vierzoner Strasse 14 D-06749 Bitterfeld, Germany null,nullGermany
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52-90-4 H-D-Cys-OH.HCl.H2O

  • H-D-Cys-OH.HCl.H2O
  • Germany IRIS Biotech GmbH [Manufacturer]
  • Tel: +49 9231 9619 73
  • Fax: +49 9231 9619 99
  • Address: IRIS Biotech GmbH
    Waldershofer Str. 49-51
    D-95615 Marktredwitz, Germany null,nullGermany
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52-90-4 L-Cysteine Cell culture grade

  • L-Cysteine Cell culture grade
  • Germany AppliChem mbH null
  • Tel: +49 6151 93 57 0
  • Fax: +49 6151 93 57 11
  • Address: Ottoweg 4 D-64291 Darmstadt null,nullGermany
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52-90-4 L - CYSTEINE

  • Germany CEDA Chemicals GmbH [Manufacturer]
  • Tel: + 49 - 25 94 - 78 31 40 - 0
  • Fax: + 49 - 25 94 - 78 31 40 - 22
  • Address: CEDA Chemicals GmbH
    Fehrbelliner Platz 1
    D-48249 D?lmen
    Germany null,nullGermany
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52-90-4 L-CYSTEINE

  • Germany Wacker Chemie AG [Manufacturer]
  • Tel: +49 89 6279-1484/ 800-293-7023 (Biochem)
  • Fax: +49 89 6279-2921
  • Address: Wacker Chemie AG
    WACKER FINE CHEMICALS
    Hanns-Seidel-Platz 4
    81737 M?nchen
    Germany null,nullGermany
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52-90-4 L-Cysteine HCl monohydrate

  • L-Cysteine HCl monohydrate, Ph.Eur.,USP,FCC
  • Germany Pharmazell GmbH & Co. KG [Manufacturer]
  • Tel: +49 8035 88176
  • Fax: +49 8035 88186
  • Address: Rosenheimer Strasse 43 D-83064 Raubling GERMANY ,nullGermany
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52-90-4 L-CYSTEINE FREE BASE

  • Germany PharmaZell GmbH [Manufacturer]
  • Tel: +49 8035 88 154
  • Fax: +49 8035 88 192
  • Address: PharmaZell GmbH
    Rosenheimer Str. 43
    Raubling
    D- 83064 Germany null,nullGermany
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References of (2R)-2-amino-3-sulfanylpropanoic acid
Title: Cysteine
CAS Registry Number: 52-90-4
CAS Name: L-Cysteine
Synonyms: Cys; C; b-mercaptoalanine; (R)-2-amino-3-mercaptopropanoic acid; 2-amino-3-mercaptopropionic acid; a-amino-b-thiolpropionic acid; half-cystine; thioserine
Molecular Formula: C3H7NO2S
Molecular Weight: 121.16
Percent Composition: C 29.74%, H 5.82%, N 11.56%, O 26.41%, S 26.47%
Literature References: A non-essential amino acid in human development. Readily oxides to form a dimeric amino acid, cystine, q.v., in which the two Cys are linked via a disulfide bridge, a common structural feature in proteins. Early chemistry and biochemistry: Amino Acids and Proteins, D. M. Greenberg, Ed. (Charles C. Thomas, Springfield, IL, 1951) 950 pp., passim; J. P. Greenstein, M. Winitz, Chemistry of the Amino Acids vol 1-3 (John Wiley and Sons, Inc., New York, 1961) pp. 1879-1928, passim. Simple synthesis of racemic cysteine: V. J. Martens et al., Angew. Chem. Int. Ed. 20, 668 (1981). Determn in proteins: J. G. Hoogerheide, C. M. Campbell, Anal. Biochem. 201, 146 (1992); D. Atherton et al., ibid. 212, 98 (1993). Review of biosynthesis: N. M. Kredich et al., Ciba Found. Symp. (Netherlands) 72, 87-99 (1980). Review of transport in mammalian cells: S. Bannai, Biochim. Biophys. Acta 779, 289-306 (1984). Review of effects on acrylonitrile toxicity: D. E. Nerland et al., Drug Metab. Rev. 20, 233-246 (1989). Review of thermodynamics and kinetics: T. R. Ralph et al., J. Electroanal. Chem. 375, 1-15 (1994); of electrosynthesis: eidem, ibid. 17-27. Review of role in chemo- and radioprotectant strategies: J. C. Roberts, Amino Acids 8, 113-124 (1995).
Properties: Crystals. [a]D25 +6.5° (5N HCl); [a]D25 +13.0° (glacial acetic acid). pK1 1.71; pK2 8.33; pK3 10.78. Absorption spectrum: Abderhalden, Rossner, Z. Physiol. Chem. 178, 160 (1928). Freely sol in water, alcohol, acetic acid, ammonia water. Insol in ether, acetone, ethyl acetate, benzene, carbon disulfide, carbon tetrachloride. In neutral or slightly alkaline aq solns it is oxidized to cystine by air. More stable in acidic solns.
pKa: pK1 1.71; pK2 8.33; pK3 10.78
Optical Rotation: [a]D25 +6.5° (5N HCl); [a]D25 +13.0° (glacial acetic acid)
 
Derivative Type: Hydrochloride
CAS Registry Number: 52-89-1
Molecular Formula: C3H7NO2S.HCl
Molecular Weight: 157.62
Percent Composition: C 22.86%, H 5.12%, N 8.89%, O 20.30%, S 20.34%, Cl 22.49%
Properties: Crystals, dec 175-178°. [a]D25 +5.0° (5N HCl); [a]D25 +10.0° (glacial acetic acid). Sol in water, alcohol, acetone; the aq soln is acid. Keep tightly closed. Decomposes and oxidizes slowly; hygroscopic.
Optical Rotation: [a]D25 +5.0° (5N HCl); [a]D25 +10.0° (glacial acetic acid)
 
Use: As dough conditioner.
Therap-Cat-Vet: Has been used as a detoxicant.