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Visclair

HCID 29144
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Basic information

CAS
18598-63-5
Standard SMILES
COC(=O)[C@@H]([NH3+])CS.[Cl-]
InChIKey
WHOHXJZQBJXAKL-DFWYDOINSA-N
Molecular formula
C4H10ClNO2S
Average molar mass
171.65 g/mol
Monoisotopic mass
171.0120774

Overview

See also: L-Cysteine, methyl ester, hydrochloride (preferred); L-Cysteine, methyl ester (annotation moved to).

Names & identifiers

Preferred name
Visclair
IUPAC
[(2R)-1-methoxy-1-oxo-3-sulfanylpropan-2-yl]azanium chloride
English name
L-Cysteine methyl ester hydrochloride
Molecular formula
C4H10ClNO2S
Molecular weight
171.65

Names & synonyms

VisclairActhiol JChistaitPectiteZeotin[(2R)-1-methoxy-1-oxo-3-sulfanylpropan-2-yl]azanium;chlorideEpecoale hydrochlorideJeorgenActhiol aerosolMecysteine HClMethyl cysteine hydrochlorideActiol J
Show more names
H-Cys-OmeMethyl L-Cysteinate Hydrochloride(R)-Cysteine Methyl Ester HydrochlorideMECYSTEINE HYDROCHLORIDEMethyl cysteinate hydrochlorideL-Cysteine Methyl ester hydrochloride 98%actioll.j.48acdrile
L.J. 48EINECS 242-435-0Methyl cysteine hydrochloride (VAN)NSC 161611Methyl beta-mercaptoalanine hydrochloride871018-11-0CYSTEINE, METHYL ESTER, HYDROCHLORIDE, L-Methyl alpha-amino-beta-mercaptopropionate hydrochloride

Database identifiers

CAS
18598-63-5、871018-11-0
PubChem CID
29144

Properties

Computed structural properties

Topological polar surface area
54.9 Ų
Hydrogen bond donors
2
Hydrogen bond acceptors
4
Rotatable bonds
3
Heavy atoms
9
Formal charge
0
Complexity
86.1

Physicochemical properties

Melting point
142 °C · 142 °C (dec.)(lit.)
alpha
-2.25 · -2.25 º (c=5, 1 N HCl)
Density
1.232 · 1.232 (estimate)
FEMA
4781 · 4781 | L-CYSTEINE METHYL ESTER HYDROCHLORIDE
refractive index
-2.5 ° · -2.5 ° (C=20, MeOH)
storage temp.
Keep in dark place,Sealed in dry,Room Temperature
solubility
DMSO (Slightly), Methanol, Water (Slightly)
form
Crystalline Powder
color
White
biological source
synthetic
optical activity
20 · [α]20/D 1.8°, c = 10 in methanol
Water Solubility
Soluble in water
Merck
13 · 13,5809
JECFA Number
2270 · 2270
BRN
3685824 · 3685824
Stability
Stable. Incompatible with strong oxidizing agents.

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

Safety data

F
1-10
PPE
dust mask type N95 (US), Eyeshields, Gloves
wgk
2
rtecs
HA2460000
hs_code
29309090
risk_code
36/37/38
Signal word
Warning
Symbol(GHS)
GHS07
hazard_code
Xi
safety_code
26-36-37/39
Storage Class
11 - Combustible Solids
Hazard statements
H303-H315-H319-H335
Precautionary statements
P261-P305+P351+P338-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P280a-P304+P340-P405-P501a

Chemistry & industry

Applications · 3 items

UsesA mucolytic. An effective drug for the treatment of liver failure. Shown to effectively inhibit the binding of ethynylestradiol metabolites to protein and nucleic acids.

UsesMucolytic agent

UsesL-Cysteine methyl ester hydrochloride is a biochemical shown to inhibit binding of ethynylestradiol metabolites to protein and nucleic acids. It used in the synthesis of peptides, Preparation of thiazolidine-4-carboxylates with carbonyl compounds.

Preparation methods

PreparationL-Cysteine methyl ester hydrochloride is prepared by esterification of L-cysteine hydrochloride monohydrate with methanol in the presence of hydrogen chloride.

Upstream & downstream products

Upstream raw materials

MethanolL-Cysteine monohydrochlorideL-Cysteine

Downstream products

IsoprothiolaneN-BenzyloxybenzamideDimethyl cystinatemethyl (R)-thiazolidine-4-carboxylateL-2,2-DiMethylthiazolidine-4-carboxylic Acid Methyl Ester

Additional notes

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Compound notes

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Major Application
peptide synthesis
InChI
1S/C4H9NO2S.ClH/c1-7-4(6)3(5)2-8;/h3,8H,2,5H2,1H3;1H/t3-;/m0./s1
InChIKey
WHOHXJZQBJXAKL-DFWYDOINSA-N
SMILES
Cl[H].COC(=O)[C@@H](N)CS
CAS DataBase Reference
18598 · 18598-63-5(CAS DataBase Reference)
FDA UNII
33 RG619160 · 33RG619160
UNSPSC Code
12352209 · 12352209
NACRES
22 · NA.22
Symbol(GHS)
7 · GHS07
Signal word
Warning
Hazard statements
303 · H303-H315-H319-H335
Precautionary statements
261 · P261-P305+P351+P338-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P280a-P304+P340-P405-P501a
PPE
95 · dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes
Xi
Risk Statements
36 · 36/37/38
Safety Statements
26 · 26-36-37/39
WGK Germany
2 · 2
RTECS
2460000 · HA2460000
F
1 · 1-10
HS Code
29309090 · 29309090
Storage Class
11 · 11 - Combustible Solids

DefinitionChEBI: Mecysteine hydrochloride is an alpha-amino acid ester.