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C121908

Sigma-Aldrich

L-Cysteine ethyl ester hydrochloride

98%

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Synonym(s):
(R)-Ethyl 2-amino-3-mercaptopropanoate hydrochloride, Cystanin, Ethyl L-cysteinate hydrochloride
Linear Formula:
HSCH2CH(NH2)COOC2H5 · HCl
CAS Number:
Molecular Weight:
185.67
Beilstein/REAXYS Number:
3562600
EC Number:
MDL number:
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

form

powder

optical activity

[α]20/D −7.9°, c = 1 in 1 M HCl

optical purity

ee: 99% (GLC)

reaction suitability

reaction type: solution phase peptide synthesis

color

white

mp

123-125 °C (lit.)

application(s)

peptide synthesis

SMILES string

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

InChI

1S/C5H11NO2S.ClH/c1-2-8-5(7)4(6)3-9;/h4,9H,2-3,6H2,1H3;1H/t4-;/m0./s1

InChI key

JFKJWWJOCJHMGV-WCCKRBBISA-N

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1 of 4

This Item
30120A2883410209
vibrant-m

30120

L-Cysteine hydrochloride

assay

98%

assay

≥99.0% (RT)

assay

≥98%

assay

98%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

mp

123-125 °C (lit.)

mp

174.1-174.7 °C

mp

-

mp

142 °C (dec.) (lit.)

color

white

color

white

color

white

color

-

optical activity

[α]20/D −7.9°, c = 1 in 1 M HCl

optical activity

[α]20/D +6.4±0.3°, c = 5% in 5 M HCl

optical activity

-

optical activity

[α]20/D −1.8°, c = 10 in methanol

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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