HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
DL-Cystein
DL-CYSTEIN · rac-cysteine · NSC 63864 · DL-CYSTEINE · H-DL-CYS-OH · dl-cysteina · DL-Cystenine · Cysteine, DL-
Identifikatoren & physikalische Daten
| CAS No. | 3374-22-9 |
|---|---|
| Summenformel | C3H7NO2S |
| Durchschnittliche Molmasse | 121,16 g/mol |
| Monoisotopische Masse | 121,01974964 g/mol |
| SMILES | NC(CS)C(=O)O |
| InChIKey | XUJNEKJLAYXESH-UHFFFAOYSA-N |
| PubChem CID | 594 |
| ChEMBL | CHEMBL54943 |
| ChEBI | CHEBI:15356 |
| EC No. | 222-160-2 |
| DTXSID | DTXSID5046988 |
| Lokaler Name | DL-Cystein |
Chemische & physikalische Eigenschaften
| XLogP | -2,5 |
|---|---|
| Polarare Oberfläche (TPSA) | 64,3 |
| H-Brücken-Donoren | 3 |
| H-Brücken-Akzeptoren | 4 |
| Frei drehbare Bindungen | 2 |
| Schwere Atome | 7 |
| Formalladung | 0 |
| Komplexität | 75 |
| Schmelzpunkt | 225 °C (dec.) (lit.) |
| Siedepunkt | 293.9±35.0 °C(Predicted) |
| Dichte | 1.197 (estimate) |
| Brechungsindex | 1.5130 (estimate) |
| Lagerbedingungen | Keep in dark place,Inert atmosphere,Room temperature |
| Löslichkeit | Aqueous Acid (Sparingly), DMSO (Sightly), Water (Slightly)Soluble in water (partly), 1 N HCl (25 mg/ml), ethanol, and acetic acid. Insoluble in acetone. |
| pKa (Säurekonstante) | 2.07±0.10(Predicted) |
| Aggregatzustand | Powder |
| Farbe | White to off-white |
| BRN | 1721406 |
| Stabilität | Stable. Incompatible with strong oxidizing agents, |
| Hauptanwendungen | peptide synthesis |
| Kosmetik-Inhaltsstoffe Funktionen | 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 (Verteilungskoeffizient) | 0.230 (est) |
| CAS Datenbank | 3374-22-9(CAS DataBase Reference) |
| NIST chemische Informationen | DL-Cysteine(3374-22-9) |
Sicherheit & Vorschriften
| F | 8-10-23 |
|---|---|
| Wassergefährdungsklasse (WGK) | 3 |
| UN-Transportnummer | UN 2923 6.1(8) / PGIII |
| Zollcode | 29309013 |
| RTECS-Nr. | HA1595000 |
| R-Sätze (R) | 20/21/22-36/37/38-22-35 |
| Gefahrensymbole | Xn,Xi,C |
| Sicherheitshinweise (S) | 26-36-37/39-45-36/37/39 |
| Gefahrenklasse | 8, 6.1Acute Tox. 4 InhalationAcute Tox. 4 OralEye Dam. 1Skin Corr. 1ASTOT SE 3 |
| Lagerklasse | 6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects |
Anwendungen & Verwendung
Verwenden
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.