Molekula
L-Cysteine (TF)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Certificate of Analysis with every batch
L-Cysteine (TF) is a semi-synthetic, thiol-containing amino acid widely used in pharmaceuticals, cosmetics, and food processing as a reducing agent, hair straightening treatment, and flavor enhancer. It is also employed in the synthesis of other chemicals and as a nutrient supplement. This product has a CAS number of 52-90-4, molecular formula HSCH2CH(NH2)CO2H, and a molecular weight of 121.16 g/mol. It should be stored between 2 to 8°C and carries a signal word of "Warning" for safety classification. Molekula supplies L-Cysteine (TF) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.
Overview
- SKU
- 90030874
- CAS Number
- 52-90-4
- IUPAC Name
- (2R)-2-amino-3-sulfanylpropanoic acid
- EC Number
- 200-158-2
- Molecular Formula
- HSCH2CH(NH2)CO2H
- Molecular Weight
- 121.16
- Exact Mass
- 121.0197
- SMILES
- C([C@@H](C(=O)O)N)S
- InChIKey
- XUJNEKJLAYXESH-REOHCLBHSA-N
- InChI
- InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
- PubChem CID
- 5862
Literature values
Published physical properties of the substance, not batch specifications.
- Appearance
- Colorless crystals
- Melting Point
- 260 °C decomposes
- Water Solubility
- Freely soluble in water
- Solubility (other solvents)
- Very soluble in water and acetic acid; Insoluble in ether, acetone and benzene
- Vapour Pressure
- 0.00000207 mmHg
- pKa
- pKa = 1.71
- log P (octanol/water)
- -2.49
Source: PubChem CID 5862 (HSDB, Joint FAO/WHO Expert Committee on Food Additives (JECFA), Haz-Map, DrugBank)
See all 2 other grades of CAS 52-90-4 →
Frequently asked questions
What is L-Cysteine (TF) commonly used for?
L-Cysteine (TF) is primarily used in pharmaceuticals, cosmetics, and as a reducing agent in hair treatments, as well as in food and feed supplements for its sulfur-containing amino acid properties.
What is the chemical formula and molecular weight of L-Cysteine (TF)?
The chemical formula is **HSCH₂CH(NH₂)CO₂H**, and the molecular weight is **121.16 g/mol**.
How should L-Cysteine (TF) be stored?
Store L-Cysteine (TF) refrigerated at **2 to 8°C** in a dry, well-ventilated area, away from heat and direct sunlight.
What grade of L-Cysteine (TF) does Molekula supply?
Molekula supplies **Technical Grade (TF) L-Cysteine**, suitable for industrial and pharmaceutical applications requiring high purity.
Can Molekula supply L-Cysteine (TF) in bulk quantities?
Yes, Molekula can supply L-Cysteine (TF) in bulk, with flexible packaging options including drums, bags, or custom solutions based on your requirements.
What documentation comes with an order of L-Cysteine (TF)?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** to ensure compliance and quality assurance.
Related products
-
L-Cysteine
CAS 52-90-4 · HSCH2CH(NH2)CO2H -
L-Glutamine - tested to USP specifications
CAS 56-85-9 · H2NCOCH2CH2CH(NH2)CO2H -
L-Leucine USP Grade
CAS 61-90-5 · C6H13NO2 -
DL-Glutamic acid 1hydrate
CAS 19285-83-7 · C5H9NO4 · H2O -
L-(+)-2-Aminobutyric acid
CAS 1492-24-6 · C4H9NO2 -
Glycine ethyl ester hydrochloride (PH)
CAS 623-33-6 · NH2CH2COOC2H5 · HCl
Molekula has supplied fine chemicals and biochemicals since 2000 from ISO 9001:2015 and ISO 14001:2015 certified facilities. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.