ChemicalBook >> CAS DataBase List >>DL-Cysteine
DL-Cysteine
- CAS No.
- 3374-22-9
- Chemical Name:
- DL-Cysteine
- Synonyms
- DL-CYSTEIN;rac-cysteine;NSC 63864;DL-CYSTEINE;H-DL-CYS-OH;dl-cysteina;DL-Cystenine;Cysteine, DL-;DL-Cysteine 0;Cysteine (9CI)
- CBNumber:
- CB6363851
- Molecular Formula:
- C3H7NO2S
- Molecular Weight:
- 121.16
- MDL Number:
- MFCD00004881
- MOL File:
- 3374-22-9.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-06-04 16:00:12
| Product description | Number | Pack Size | Price |
| DL-Cysteine technical grade | 861677 | 10g | $90.2 |
| DL-Cysteine technical grade | 861677 | 50g | $305 |
| DL-Cysteine ≥95% | 41968 | 1g | $28 |
| DL-Cysteine ≥95% | 41968 | 5g | $110 |
| DL-Cysteine Asreported | 269946 | 10g | $353 |
| More product size | |||
| Melting point | 225 °C (dec.) (lit.) |
|---|---|
| Boiling point | 293.9±35.0 °C(Predicted) |
| Density | 1.197 (estimate) |
| refractive index | 1.5130 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | Aqueous Acid (Sparingly), DMSO (Sightly), Water (Slightly) |
| pka | 2.07±0.10(Predicted) |
| form | Powder |
| color | White to off-white |
| Water Solubility | Soluble in water (partly), 1 N HCl (25 mg/ml), ethanol, and acetic acid. Insoluble in acetone. |
| BRN | 1721406 |
| Stability | Stable. Incompatible with strong oxidizing agents, |
| Major Application | peptide synthesis |
| Cosmetics Ingredients Functions |
ANTIOXIDANT HAIR CONDITIONING REDUCING HAIR WAVING OR STRAIGHTENING FRAGRANCE ANTISTATIC |
| InChI | 1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6) |
| InChIKey | XUJNEKJLAYXESH-UHFFFAOYSA-N |
| SMILES | NC(CS)C(O)=O |
| LogP | 0.230 (est) |
| CAS DataBase Reference | 3374-22-9(CAS DataBase Reference) |
| FDA UNII | 5CM45Q5YAF |
| NIST Chemistry Reference | DL-Cysteine(3374-22-9) |
| UNSPSC Code | 12352209 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302+H332-H314-H335 | |||||||||
| Precautionary statements | P260-P280-P301+P312-P303+P361+P353-P304+P340+P310-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xn,Xi,C | |||||||||
| Risk Statements | 20/21/22-36/37/38-22-35 | |||||||||
| Safety Statements | 26-36-37/39-45-36/37/39 | |||||||||
| RIDADR | UN 2923 6.1(8) / PGIII | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | HA1595000 | |||||||||
| F | 8-10-23 | |||||||||
| HazardClass | 8, 6.1 | |||||||||
| HS Code | 29309013 | |||||||||
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
|||||||||
| Hazard Classifications | Acute Tox. 4 Inhalation Acute Tox. 4 Oral Eye Dam. 1 Skin Corr. 1A STOT SE 3 |
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| Limited Quantities | 5.0 kg (11 lbs) (solid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
DL-Cysteine price More Price(78)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 861677 | DL-Cysteine technical grade | 3374-22-9 | 10g | $90.2 | 2026-04-30 | Buy |
| Sigma-Aldrich | 861677 | DL-Cysteine technical grade | 3374-22-9 | 50g | $305 | 2026-04-30 | Buy |
| Cayman Chemical | 41968 | DL-Cysteine ≥95% | 3374-22-9 | 1g | $28 | 2026-04-30 | Buy |
| Cayman Chemical | 41968 | DL-Cysteine ≥95% | 3374-22-9 | 5g | $110 | 2026-04-30 | Buy |
| Usbiological | 269946 | DL-Cysteine Asreported | 3374-22-9 | 10g | $353 | 2026-06-03 | Buy |
DL-Cysteine Chemical Properties,Uses,Production
Chemical Properties
white solid
Uses
DL-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. Cysteine is commonly used as a precursor in the food and pharmaceutical industries. Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours.
Uses
DL-Cysteine is a NMDA agonist at quisqualate receptors at high concentration.
Definition
ChEBI: A sulfur-containing amino acid that is propanoic acid with an amino group at position 2 and a sulfanyl group at position 3.
reaction suitability
reaction type: solution phase peptide synthesis
Biochem/physiol Actions
NMDA agonist that is an agonist at quisqualate receptors at high concentration.
DL-Cysteine Preparation Products And Raw materials
Global( 352)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 | sales1@chuanghaibio.com | China | 5216 | 58 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29766 | 58 |
| CONIER CHEM AND PHARMA LIMITED | sales@conier.com | China | 49906 | 58 | |
| SIMAGCHEM CORP | +86-5922680277 +86-13806087780 | sale@simagchem.com | China | 17339 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +86-189 4982 3763 | sales@tnjchem.com | China | 34526 | 58 |
| AFINE CHEMICALS LIMITED | +86-571-85134551 +86-18958018566 | info@afinechem.com | China | 15052 | 58 |
| Wuhan Fortuna Chemical Co., Ltd | +86-27-59207850 | info@fortunachem.com | China | 5998 | 58 |
| Dayang Chem (Hangzhou) Co.,Ltd. | +86-0571-88938639 17705817739 | info@dycnchem.com | China | 52693 | 58 |
| Shaanxi Didu New Materials Co. Ltd | +86-86-17392712779 +86-13289823923 | 1090@dideu.com | China | 8651 | 58 |
| Wuhu Nuowei chemistry Co., Ltd. | +86-0553-2911116-802 +86-18055326116 | sales1@nuowei-chem.com | China | 1626 | 58 |
View Lastest Price from DL-Cysteine manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-08-24 | DL-Cysteine
3374-22-9
|
1KG | 98%min | 500kgs | WUHAN FORTUNA CHEMICAL CO., LTD | ||
 |
2026-05-28 | 2-Amino-3-mercaptopropionic acid
3374-22-9
|
$180.60 | 1KG | 99% | 5000kg | Hebei Chuanghai Biotechnology Co,.LTD | |
 |
2025-06-27 | DL-Cysteine
3374-22-9
|
1KG | 99% | 500000kg | Hebei Chuanghai Biotechnology Co., Ltd |
-
- DL-Cysteine
3374-22-9
- $0.00
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- 2-Amino-3-mercaptopropionic acid
3374-22-9
- $180.60
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
-
- DL-Cysteine
3374-22-9
- $0.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
(RS)-2-Amino-3-mercapto-propansαure
Cysteine, DL-
DL-2-amino-3-mercaptopropanoicacid
DL-2-amino-3-mercaptopropionicacid
Carbocistein Impurity 2
DL-CYSTEINE FREE BASE
DL-2-Amino-3-mercaptopropionicacid~H-DL-Cys-OH
(+/-)-2-AMINO-3-MERCAPTOPROPIONIC ACID
2-AMINO-3-MERCAPTO-PROPIONIC ACID
DL-CYSTEIN
DL-CYSTEINE
H-DL-CYS-OH
dl-cysteina
L-HSCH2CH(NH2)COOH
DL-Cysteine, S-Benzyl-1-13C
Cysteine (9CI)
Cysteine, DL- (8CI)
NSC 63864
2-Amino-3-mercaptopropionic acid(Cysteine)
Carbocistein Impurity
Dl-Cysteine Base
H-DL-CYS-OH / CYSTEINE
rac-(R*)-2-Amino-3-mercaptopropanoic acid
DL-Cysteine,99%
(R,S)-2-Amino-3-mercapto-propionic acid
DL-CYSTEINE, S-BENZYL
DL-Cysteine technical grade
DL-Cysteine 0
DL-Cysteine, >=98%
cysteine/Acetylcysteine
DL-Cysteine,(±)-2-Amino-3-mercaptopropionic acid
DL-CYSTEINE (1-13C)
DL-Cysteine USP/EP/BP
Cysteine (9CI, ACI)
DL-Cystenine
C11925000 DL-Cysteine
Prinomastat Impurity 10
DL -Cysteine
DL-Cysteine (Standard)
rac-cysteine
3374-22-9
156-2-51
C6H5CH2SCH2CHNH2COOH
C3H7NO2S
Amino Acid Derivatives
CARBOXYLIC ACID
Cysteine/Cystine
Specialty Synthesis
Peptide Synthesis
Amino Acids
Pharmaceutical Intermediates
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