L-Cysteine hydrochloride monohydrate

Name: <SC>L</SC>-Cysteine hydrochloride monohydrate
Brand: SIGMA

BioUltra, ≥99.0% (RT)

Synonym(s):

L-Cysteine hydrochloride hydrate (1:1:1)

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About This Item

Linear Formula:

HSCH₂CH(NH₂)COOH · HCl · H₂O

CAS Number:

7048-04-6

Molecular Weight:

175.63

Beilstein/REAXYS Number:

5158059

EC Number:

200-157-7

MDL number:

MFCD00065606

UNSPSC Code:

12352209

eCl@ss:

32160406

PubChem Substance ID:

57648412

NACRES:

NA.26

Key Documents

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product line

BioUltra

assay

≥99.0% (RT)

form

crystals

optical activity

[α]20/D +5.6±0.3°, c = 5% in 5 M HCl

impurities

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

ign. residue

≤0.05% (as SO₄)

color

white

solubility

H₂O: 1 M at 20 °C, clear, colorless

anion traces

sulfate (SO₄^2-): ≤200 mg/kg

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

λ

1 M in H₂O

UV absorption

λ: 260 nm A_max: 1.0
λ: 280 nm A_max: 0.3

SMILES string

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

InChI

1S/C3H7NO2S.ClH.H2O/c4-2(1-7)3(5)6;;/h2,7H,1,4H2,(H,5,6);1H;1H2/t2-;;/m0../s1

InChI key

QIJRTFXNRTXDIP-JIZZDEOASA-N

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This Item	30122	PHR1102	C3290000
Sigma-Aldrich 30129 L-Cysteine hydrochloride monohydrate	Sigma-Aldrich 30122 L-Cysteine hydrochloride monohydrate	Supelco PHR1102 L-Cysteine hydrochloride monohydrate	C3290000 Cysteine hydrochloride monohydrate
form crystals	form solid	form -	form -
assay ≥99.0% (RT)	assay 98.5-101.0%	assay -	assay -
product line BioUltra	product line -	product line -	product line -
cation traces Al: ≤10 mg/kg, Ba: ≤5 mg/kg, Ca: ≤10 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤100 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg, As: ≤0.5 mg/kg, Cd: ≤5 mg/kg, Fe: ≤5 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Bi: ≤5 mg/kg, Li: ≤5 mg/kg, Sr: ≤5 mg/kg, Cr: ≤5 mg/kg, NH₄⁺: ≤500 mg/kg	cation traces -	cation traces -	cation traces -
color white	color -	color -	color -
solubility H₂O: 1 M at 20 °C, clear, colorless	solubility H₂O: soluble 100 g/L at 25 °C	solubility -	solubility -

Biochem/physiol Actions

NMDA glutamatergic receptor antagonist.

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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