8.16014
(R)-(+)-Cysteine
for synthesis
Synonym(s):
(R)-(+)-Cysteine, α-Amino-β-mercapto propionic acid, αlpha-Amino-β-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid
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About This Item
Empirical Formula (Hill Notation):
C3H7NO2S
CAS Number:
Molecular Weight:
121.16
UNSPSC Code:
12352209
EC Index Number:
200-158-2
NACRES:
NA.22
MDL number:
Quality Level
form
solid
autoignition temp.
420 °C
potency
1890 mg/kg LD50, oral (Rat)
pH
4.5-5.5 (20 °C, 100 g/L in H2O)
mp
220-228 °C
bulk density
300 kg/m3
storage temp.
2-30°C
SMILES string
SCC([N+H3])C(=O)[O-]
InChI
1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)
InChI key
XUJNEKJLAYXESH-UHFFFAOYSA-N
General description
Cysteine is used as a building block in the synthesis of peptides due to its ability to form disulfide bonds. Additionally, it functions as a chiral auxiliary in asymmetric synthesis, facilitating the induction of chirality in the resulting products.
Analysis Note
Assay (HClO₄): ≥ 98.0 %
Spec. rotation [α²0/D (c=8 in HCl 1 mol/l): +8.0 - +9.5 °
Identity (IR): passes test
Spec. rotation [α²0/D (c=8 in HCl 1 mol/l): +8.0 - +9.5 °
Identity (IR): passes test
Storage Class
13 - Non Combustible Solids
wgk
WGK 1
Certificates of Analysis (COA)
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