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C121800

Sigma-Aldrich

L-Cysteine hydrochloride hydrate

99%

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Synonym(s):
L-Cysteine·HCl hydrate
Linear Formula:
HSCH2CH(NH2)CO2H·HCl·xH2O
CAS Number:
Molecular Weight:
157.62 (anhydrous basis)
EC Number:
MDL number:
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

99%

form

solid

optical activity

[α]23/D +5.2°, c = 2 in 5 M HCl

reaction suitability

reaction type: solution phase peptide synthesis

technique(s)

affinity chromatography: suitable

color

white

application(s)

peptide synthesis

storage temp.

2-8°C

SMILES string

Cl[H].[H]O[H].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
30129C7880C6852
L-Cysteine hydrochloride hydrate 99%

C121800

L-Cysteine hydrochloride hydrate

-
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
L-Cysteine hydrochloride monohydrate from non-animal source, suitable for cell culture, meets EP, USP testing specifications

C6852

L-Cysteine hydrochloride monohydrate

-
assay

99%

assay

≥99.0% (RT)

assay

≥98% (TLC)

assay

98.5-101.0% dry basis

technique(s)

affinity chromatography: suitable

technique(s)

-

technique(s)

-

technique(s)

cell culture | mammalian: suitable

storage temp.

2-8°C

storage temp.

-

storage temp.

-

storage temp.

room temp

color

white

color

white

color

white

color

white

optical activity

[α]23/D +5.2°, c = 2 in 5 M HCl

optical activity

[α]20/D +5.6±0.3°, c = 5% in 5 M HCl

optical activity

-

optical activity

[α]20/D 6.1 to 7.8°, c = 8 in 1 M HCl, [α]25/D 5.7 to 6.8°, c = 8 in HCl (6 N)

General description

L-Cysteine hydrochloride hydrate also known as L-Cysteine·HCl hydrate, is commonly used as a starting material in the synthesis of L-cysteine (alkylated, acidic, and alcoholic) derivatives.

Application

L-Cysteine hydrochloride hydrate is used as a standard solution to determine the quantity of thiol groups attached on mucoadhesiveness.

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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L-Cysteine hydrochloride United States Pharmacopeia (USP) Reference Standard

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1161509

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