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Thermo Scientific Chemicals L-Cysteine hydrochloride monohydrate, 99%
CAS: 7048-04-6 | C3H10ClNO3S | 175.63 g/mol
Brand: Thermo Scientific Chemicals A10389.22
66.48 EUR valid until 2025-03-28
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66.48 EUR valid until 2025-06-30
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Quantity | 100 g |
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Description
L-Cysteine hydrochloride monohydrate is used as a precursor in food, pharmaceutical and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. It is involved in the treatment of liver disease as an antioxidant and antidote. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
ApplicationsL-Cysteine hydrochloride monohydrate is used as a precursor in food, pharmaceutical and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. It is involved in the treatment of liver disease as an antioxidant and antidote. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool.
Solubility
Soluble in cold water.
Notes
Air and light sensitive. Hygroscopic. Keep container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents, metals and hydrogen chloride.

Chemical Identifiers
7048-04-6 | |
175.63 | |
QIJRTFXNRTXDIP-JIZZDEOASA-N | |
23462 | |
C(C(C(=O)O)N)S.O.Cl |
C3H10ClNO3S | |
MFCD00065606 | |
l-cysteine hydrochloride monohydrate, h-cys-oh.hcl.h2o, l-cysteine hydrochloride hydrate, l-cysteine monohydrate monochloride, r-2-amino-3-mercaptopropanoic acid hydrochloride hydrate, unii-zt934n0x4w, l-cysteine hydrate hydrochloride, cysteine hydrochloride monohydrate, l, h-cys-ohhclh2o, cysteine hclShow More | |
(2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride |
Specifications
∽175°C (decomposition) | |
99% | |
MFCD00065606 | |
l-cysteine hydrochloride monohydrate, h-cys-oh.hcl.h2o, l-cysteine hydrochloride hydrate, l-cysteine monohydrate monochloride, r-2-amino-3-mercaptopropanoic acid hydrochloride hydrate, unii-zt934n0x4w, l-cysteine hydrate hydrochloride, cysteine hydrochloride monohydrate, l, h-cys-ohhclh2o, cysteine hcl | |
QIJRTFXNRTXDIP-JIZZDEOASA-N | |
(2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride | |
100 g | |
175.64 (157.62 Anhydrous) | |
L-Cysteine hydrochloride monohydrate |
7048-04-6 | |
C3H10ClNO3S | |
5158059 | |
Soluble in cold water. | |
C(C(C(=O)O)N)S.O.Cl | |
175.63 | |
23462 | |
Air Sensitive |
Safety and Handling
- L-Cysteine hydrochloride monohydrate
Signal Word
- Warning
Hazard Category
- Serious eye damage/eye irritation Category 2
- Skin corrosion/irritation Category 2
- Specific target organ toxicity Category 3
Hazard Statement
- H315-Causes skin irritation.
- H319-Causes serious eye irritation.
- H335-May cause respiratory irritation.
Precautionary Statement
- P280-Wear protective gloves/protective clothing/eye protection/face protection.
- P302+P352-IF ON SKIN: Wash with plenty of water/soap.
- P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
- P312-Call a POISON CENTER/doctor/if you feel unwell.
- P332+P313-If skin irritation occurs: Get medical advice/attention.
- P337+P313-If eye irritation persists: Get medical advice/attention.
Supplemental information
- MIXTURE LIST-Contains : L-(+)-Cysteine hydrochloride monohydrate
Certificates
A lot number is required to show results for certificates. To find your lot number on previous orders use our order status area.
Lot Number | Certificate Type | Date | Catalog Number |
---|---|---|---|
Q16L006 | Certificate of Analysis | 17/05/2025 | A10389.22,A10389.36,A10389.14 |
Y07K026 | Certificate of Analysis | 14/11/2024 | A10389.22,A10389.14,A10389.36 |
Q16K004 | Certificate of Analysis | 11/06/2024 | A10389.22,A10389.14,A10389.36 |
Z18J001 | Certificate of Analysis | 11/01/2024 | A10389.22,A10389.14,A10389.36 |
Z01I030 | Certificate of Analysis | 05/01/2023 | A10389.22,A10389.14,A10389.36 |
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