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CAS No 52-90-4 , (2R)-2-amino-3-sulfanylpropanoic acid

  • 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 L-Cysteine (3-13C, 99%)

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52-90-4 L-Cysteine, S-Benzyl (3-13C, 99%)

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52-90-4 L-Cysteine

  • Supplier: Premium Ingredient Co.,Ltd Product Name: L-Cysteine Cas No.:52-90-4 Quality Standard: AJI97 Description: white crystals or crystalline powder. Solubility (H2O, g/100g): about 16(20°) Specific rotation: +8.3 to +9.5° (transmittance): Not les...
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52-90-4 L-Cysteine

  • L-Cysteine Base 52-90-4 amino acid CAS No.:52-90-4 Molecule Formula:C3H7NO2S Molecule Weight:121.16 Description:white or white crystalline powder, slightly characteristic taste. Freely soluble in water. Manufacture Standards:AJI92 Test specification ...
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52-90-4 L-Cysteine

  • Product Name: L-Cysteine Synonyms:(R)-2-Amino-3-mercaptopropanoic acid;3-mercapto-l-alanin;alpha-amino-beta-mercaptopropionicacid;alpha-Amino-beta-thiolpropionic acid;alpha-amino-beta-thiolpropionicacid;Cystein;half-cysteine;L-Alanine, 3-mercapto- CA...
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  • Address: No. 388, Huangshan Rd, Tianyuan District, Zhuzhou City, Hunan Province, P.R.China. zhuzhou,HunanChina
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52-90-4 L-Cysteine base

  • L-Cysteine base Cas No:52-90-4 Quality Standard: AJI97 Description: white crystals or crystalline powder. Solubility (H2O, g/100g): about 16(20°) Specific rotation: +8.3 to +9.5° State of solution(transmittance): Not less than 95.0% Chloride: Not mor...
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52-90-4 L-Cysteine base

  • L-Cysteine base Cas No.:52-90-4 Quality Standard: AJI97 Description: white crystals or crystalline powder. Solubility (H2O, g/100g): about 16(20°) Specific rotation: +8.3 to +9.5° State of solution(transmittance): Not less than 95.0% Chloride: Not mo...
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52-90-4 high purity L-Cysteine base Cas:52-90-4 for sale

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52-90-4 high purity L-Cysteine base Cas:52-90-4 for sale

  • high purity L-Cysteine base Cas:52-90-4 for sale product name:L-Cysteine base Cas:52-90-4 Quality Standard: AJI97 Description: white crystals or crystalline powder. Solubility (H2O, g/100g): about 16(20°) Specific rotation: +8.3 to +9.5° State of sol...
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52-90-4 L-Cysteine base

  • L-Cysteine base Cas No.:52-90-4 Quality Standard: AJI97 Description: white crystals or crystalline powder. Solubility (H2O, g/100g): about 16(20°) Specific rotation: +8.3 to +9.5° State of solution(transmittance): Not less than 95.0% Chloride: Not mo...
  • FOB Price: USDfalse - false /
  • China Wuhan Yuancheng Gongchuang Technology Co.,ltd [Manufacturer]
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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.