CAS 3374-22-9 DL-cysteine (HCID 594)

Names & identifiers

Preferred name: DL-cysteine
IUPAC: 2-amino-3-sulfanylpropanoic acid
English name: DL-Cysteine
Molecular formula: C3H7NO2S
Molecular weight: 121.16

Names & synonyms

DL-Cysteine3374-22-9CYSTEINE, DL-DTXSID50469885CM45Q5YAFNSC-63864DTXCID3026988RefChem:1083896222-160-2DL-Cystein150146-94-4(+/-)-2-Amino-3-mercaptopropionic acid

Show more names

rac-cysteineNSC 63864H-DL-CYS-OHdl-cysteinaDL-CystenineDL-Cysteine 0Cysteine (9CI)

2-amino-3-sulfanyl-propanoic acidMFCD00004881L-HSCH2CH(NH2)COOHDL-2-Amino-3-mercaptopropionic acidNSC647530H-Cys-OH HCl HONCGC00160365-01(+-)-Cysteine

Database identifiers

CAS: 3374-22-9
PubChem CID: 594
DTXSID: DTXSID5046988
ChEMBL: CHEMBL54943
ChEBI: CHEBI:15356
UNII: 5CM45Q5YAF
EC Number: 222-160-2
Nikkaji: J1.261K

Properties

Computed structural properties

XLogP: -2.5
Topological polar surface area: 64.3 Å²
Hydrogen bond donors: 3
Hydrogen bond acceptors: 4
Rotatable bonds: 2
Heavy atoms: 7
Formal charge: 0
Complexity: 75

Physicochemical properties

Melting point: 225 °C · 225 °C (dec.) (lit.)
Boiling point: 293.9 · 293.9±35.0 °C(Predicted)
Density: 1.197 · 1.197 (estimate)
refractive index: 1.513 · 1.5130 (estimate)
storage temp.: Keep in dark place,Inert atmosphere,Room temperature
solubility: Aqueous Acid (Sparingly), DMSO (Sightly), Water (Slightly)
pka: 2.07 · 2.07±0.10(Predicted)
form: Powder
color: White to off-white
Water Solubility: 1 N · Soluble in water (partly), 1 N HCl (25 mg/ml), ethanol, and acetic acid. Insoluble in acetone.
BRN: 1721406 · 1721406
Stability: Stable. Incompatible with strong oxidizing agents,
Major Application: peptide synthesis
Cosmetics Ingredients Functions: ANTIOXIDANTHAIR CONDITIONINGREDUCINGHAIR WAVING OR STRAIGHTENINGFRAGRANCEANTISTATIC
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: 0.23 · 0.230 (est)
CAS DataBase Reference: 3374 · 3374-22-9(CAS DataBase Reference)
FDA UNII: 5 CM45Q5YAF · 5CM45Q5YAF
NIST Chemistry Reference: DL-Cysteine(3374-22-9)
UNSPSC Code: 12352209 · 12352209
NACRES: 22 · NA.22
Symbol(GHS): 5 · GHS05,GHS07
Signal word: Danger
Hazard statements: 302 · H302+H332-H314-H335
Precautionary statements: 260 · P260-P280-P301+P312-P303+P361+P353-P304+P340+P310-P305+P351+P338
target organs: Respiratory system
PPE: 95 · dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes: Xn,Xi,C
Risk Statements: 20 · 20/21/22-36/37/38-22-35
Safety Statements: 26 · 26-36-37/39-45-36/37/39
RIDADR: 2923 · UN 2923 6.1(8) / PGIII
WGK Germany: 3 · 3
RTECS: 1595000 · HA1595000
F: 8 · 8-10-23
HazardClass: 8 · 8, 6.1
HS Code: 29309013 · 29309013
Storage Class: 6.1 C · 6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Hazard Classifications: 4 InhalationAcute · Acute Tox. 4 InhalationAcute Tox. 4 OralEye Dam. 1Skin Corr. 1ASTOT SE 3
Limited Quantities: 5 kg · 5.0 kg (11 lbs) (solid)
Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)

Safety & regulation

Safety data

F: 8-10-23
PPE: dust mask type N95 (US), Eyeshields, Gloves
wgk: 3
rtecs: HA1595000
ridadr: UN 2923 6.1(8) / PGIII
hs_code: 29309013
risk_code: 20/21/22-36/37/38-22-35
Signal word: Danger
Symbol(GHS): GHS05,GHS07
hazard_code: Xn,Xi,C
safety_code: 26-36-37/39-45-36/37/39
hazard_class: 8, 6.1
Storage Class: 6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
target organs: Respiratory system
Hazard statements: H302+H332-H314-H335
Limited Quantities: 5.0 kg (11 lbs) (solid)
Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
Hazard Classifications: Acute Tox. 4 InhalationAcute Tox. 4 OralEye Dam. 1Skin Corr. 1ASTOT SE 3
Precautionary statements: P260-P280-P301+P312-P303+P361+P353-P304+P340+P310-P305+P351+P338

Chemistry & industry

Applications · 2 items

UsesDL-Cysteine is a NMDA agonist at quisqualate receptors at high concentration.

UsesDL-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.

Upstream & downstream products

Upstream raw materials

DL-Cysteine hydrochloride

Suppliers101 total

北京华美互利生物化工010-56205725 · [email protected]

上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]

INTATRADE GmbH+49 3493/605464 · [email protected]

河北创海生物科技有限公司+86-86-13131129325 · [email protected]

上海如吉生物科技发展有限公司+86-21-65211385-8001 36031160 · [email protected]

Additional notes

DefinitionChEBI: A sulfur-containing amino acid that is propanoic acid with an amino group at position 2 and a sulfanyl group at position 3.

Related reactions

81 records

New reaction record

HRID 97334As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)

HRID 106524As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)

HRID 115541As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)

HRID 119689As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)

HRID 137488As reactantTraining data from https://doi.org/10.1039/C8SC04228D (9/10)

HRID 164395As reactantTraining data from https://doi.org/10.1039/C8SC04228D (9/10)

HRID 171455As reactantTraining data from https://doi.org/10.1039/C8SC04228D (9/10)

HRID 172933As reactantTraining data from https://doi.org/10.1039/C8SC04228D (9/10)

Compound notes

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Basic information