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30120

Sigma-Aldrich

L-Cysteine hydrochloride

anhydrous, ≥99.0% (RT)

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Synonym(s):
L-Cysteine hydrochloride (1:1)
Linear Formula:
HSCH2CH(NH2)COOH · HCl
CAS Number:
Molecular Weight:
157.62
Beilstein/REAXYS Number:
3560277
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.77

Quality Level

assay

≥99.0% (RT)

form

powder or crystals

optical activity

[α]20/D +6.4±0.3°, c = 5% in 5 M HCl

impurities

≤0.5% foreign amino acids

ign. residue

≤0.1% (as SO4)

loss

≤1.0% loss on drying

color

white

mp

174.1-174.7 °C

solubility

H2O: 1 g/10 mL, clear, colorless

anion traces

sulfate (SO42-): ≤100 mg/kg

cation traces

Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
NH4+: ≤500 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

application(s)

peptide synthesis

SMILES string

Cl[H].N[C@@H](CS)C(O)=O

InChI

1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1

InChI key

IFQSXNOEEPCSLW-DKWTVANSSA-N

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1 of 4

This Item
C800530129C7880
L-Cysteine hydrochloride anhydrous, ≥99.0% (RT)

30120

L-Cysteine hydrochloride

-
D-Cysteine hydrochloride monohydrate ≥98% (TLC)

C8005

D-Cysteine hydrochloride monohydrate

-
L-Cysteine hydrochloride monohydrate BioUltra, ≥99.0% (RT)

30129

L-Cysteine hydrochloride monohydrate

Premium Grade
L-Cysteine hydrochloride monohydrate reagent grade, ≥98% (TLC)

C7880

L-Cysteine hydrochloride monohydrate

Essential Grade
assay

≥99.0% (RT)

assay

≥98% (TLC)

assay

≥99.0% (RT)

assay

≥98% (TLC)

cation traces

Ca: ≤10 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤50 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Pb: ≤5 mg/kg, Cd: ≤5 mg/kg, Fe: ≤5 mg/kg, NH4+: ≤500 mg/kg, Zn: ≤5 mg/kg, Cr: ≤5 mg/kg, Ni: ≤5 mg/kg, Mg: ≤5 mg/kg

cation traces

-

cation traces

Al: ≤10 mg/kg, As: ≤0.5 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, NH4+: ≤500 mg/kg, Na: ≤100 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

cation traces

-

impurities

≤0.5% foreign amino acids

impurities

-

impurities

insoluble matter, passes filter test, ≤0.5% foreign amino acids

impurities

-

mp

174.1-174.7 °C

mp

185 °C

mp

-

mp

-

solubility

H2O: 1 g/10 mL, clear, colorless

solubility

-

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

-

Biochem/physiol Actions

NMDA glutamatergic receptor agonist that is also an agonist at AMPA glutamatergic receptors at high concentrations.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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