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L-Cysteine ethyl ester hydrochloride

Name: <SC>L</SC>-Cysteine ethyl ester hydrochloride
Brand: ALDRICH

98%, for peptide synthesis

Synonym(s):

(R)-Ethyl 2-amino-3-mercaptopropanoate hydrochloride, Cystanin, Ethyl L-cysteinate hydrochloride

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About This Item

Linear Formula:

HSCH₂CH(NH₂)COOC₂H₅ · HCl

CAS Number:

868-59-7

Molecular Weight:

185.67

NACRES:

NA.22

PubChem Substance ID:

24892386

eCl@ss:

32160406

UNSPSC Code:

12352209

EC Number:

212-779-6

MDL number:

MFCD00012631

Beilstein/REAXYS Number:

3562600

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Properties

Product Name

L-Cysteine ethyl ester hydrochloride, 98%

Quality Segment

200

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

Description

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This Item	30120	410209	306142
Sigma-Aldrich C121908 L-Cysteine ethyl ester hydrochloride	Sigma-Aldrich 30120 L-Cysteine hydrochloride	Sigma-Aldrich 410209 L-Cysteine methyl ester hydrochloride	Sigma-Aldrich 306142 β-Alanine ethyl ester hydrochloride
form powder	form powder or crystals	form solid	form powder
assay 98%	assay ≥99.0% (RT)	assay 98%	assay 98%
color white	color white	color -	color -
mp 123-125 °C (lit.)	mp 174.1-174.7 °C	mp 142 °C (dec.) (lit.)	mp 67-70 °C (lit.)
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 [α]20/D −1.8°, c = 10 in methanol	optical activity -
reaction suitability reaction type: solution phase peptide synthesis	reaction suitability -	reaction suitability reaction type: solution phase peptide synthesis	reaction suitability reaction type: solution phase peptide synthesis

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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