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Merck
CN

30120

L-Cysteine hydrochloride

≥99.0% (RT)

Synonym(s):

L-Cysteine hydrochloride (1:1)

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About This Item

Linear Formula:
HSCH2CH(NH2)COOH · HCl
CAS Number:
Molecular Weight:
157.62
NACRES:
NA.77
PubChem Substance ID:
UNSPSC Code:
12352209
EC Number:
200-157-7
MDL number:
Beilstein/REAXYS Number:
3560277
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Product Name

L-Cysteine hydrochloride, anhydrous, ≥99.0% (RT)

Quality Level

assay

≥99.0% (RT)

form

powder or crystals

optical activity

[α]20/D +6.4±0.3°, c = 5% in 5 M HCl

impurities

≤0.5% foreign amino acids

ign. residue

≤0.1% (as SO4)

loss

≤1.0% loss on drying

color

white

mp

174.1-174.7 °C

solubility

H2O: 1 g/10 mL, clear, colorless

anion traces

sulfate (SO42-): ≤100 mg/kg

cation traces

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, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, NH4+: ≤500 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

application(s)

peptide synthesis

SMILES string

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

InChI

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

InChI key

IFQSXNOEEPCSLW-DKWTVANSSA-N

Application


  • Drug delivery systems: A study utilized L-Cysteine HCl in the formulation of mixed micelles for the enhanced delivery of carvedilol, a cardiovascular drug, illustrating its utility in improving solubility and bioavailability of pharmaceutical compounds (Öztürk et al., 2022).

Biochem/physiol Actions

NMDA glutamatergic receptor agonist; AMPA glutamatergic receptor agonist at high concentrations.
NMDA glutamatergic receptor agonist that is also an agonist at AMPA glutamatergic receptors at high concentrations.


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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves



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Chen Ding et al.
Microbial ecology, 70(2), 433-444 (2015-03-19)
Anaerobic alkane degradation via methanogenesis has been intensively studied under mesophilic and thermophilic conditions. While there is a paucity of information on the ability and composition of anaerobic alkane-degrading microbial communities under low temperature conditions. In this study, we investigated
Sabine A Tanner et al.
The British journal of nutrition, 114(5), 746-755 (2015-08-28)
Modulating the gut microbiota via dietary interventions is a common strategy to enhance the natural defence mechanisms of the host. Several in vitro studies have highlighted the probiotic potential of Bifidobacterium thermophilum RBL67 (RBL67) selected for its anti-Salmonella effects. The
Joanne Mawhinney et al.
Acta odontologica Scandinavica, 73(3), 188-194 (2014-11-12)
The aim of this study was to compare internal bacterial colonization in two implant systems, one screw root form (SRF) with an external hexagon connection and one plateau root form (PRF) with a Morse taper internal connection. Thirty-two implants; 12



Global Trade Item Number

SKUGTIN
30120-10G04061826665220
30120-250G04061826665237
30120-50G04061826665244