Skip to Content
Merck
All Photos(3)

Documents

C121800

Sigma-Aldrich

L-Cysteine hydrochloride hydrate

99%, for peptide synthesis

Synonym(s):

L-Cysteine·HCl hydrate

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Linear Formula:
HSCH2CH(NH2)CO2H·HCl·xH2O
CAS Number:
345909-32-2
Molecular Weight:
157.62 (anhydrous basis)
EC Number:
200-157-7
MDL number:
MFCD00065606
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
24892385
NACRES:
NA.22

product name

L-Cysteine hydrochloride hydrate, 99%

Quality Level

100

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

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
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Mucoadhesive thiolated chitosans as platforms for oral controlled drug delivery: synthesis and in vitro evaluation
M Roldo
European Journal of Pharmaceutics and Biopharmaceutics, 57, 115-121 (2004)
Cysteine based novel noncompetitive inhibitors of urease (s)?Distinctive inhibition susceptibility of microbial and plant ureases
Z Amtul
Bioorganic & Medicinal Chemistry, 14, 6737-6744 (2006)
Ana Odetth Quintana-Escobar et al.
Plants (Basel, Switzerland), 12(24) (2023-12-23)
Plant growth regulators (PGR) are essential for somatic embryogenesis (SE) in different species, and Coffea canephora is no exception. In our study model, previously, we have been able to elucidate the participation of various genes involved in SE by using
Gerdt Müller et al.
Biotechnology for biofuels, 8, 187-187 (2015-11-27)
The emerging bioeconomy depends on improved methods for processing of lignocellulosic biomass to fuels and chemicals. Saccharification of lignocellulose to fermentable sugars is a key step in this regard where enzymatic catalysis plays an important role and is a major
Qinjian Zhao et al.
Human vaccines & immunotherapeutics, 10(3), 734-739 (2013-12-05)
Cryo-transmission electron microscopy (cryoTEM) is a powerful characterization method for assessing the structural properties of biopharmaceutical nanoparticles, including Virus Like Particle-based vaccines. We demonstrate the method using the Human Papilloma Virus (HPV) VLPs in GARDASIL®. CryoTEM, coupled to automated data
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service