DL-Cystine
Synonym(s):(R,R)-3,3′-Dithiobis(2-aminopropionicacid);(±)-3,3′-Dithiobis(2-aminopropionicacid);L -Cystine
- CAS NO.：923-32-0
- Empirical Formula: C6H12N2O4S2
- Molecular Weight: 240.3
- MDL number: MFCD00084652
- EINECS: 213-094-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-15 13:03:24
What is DL-Cystine?
Chemical properties
white to off-white powder
The Uses of DL-Cystine
DL-cystine is used in the preparation of sulfur-containing dimeric and monomeric surfactants.
The Uses of DL-Cystine
Cystine is a nonessential amino acid that acts as a nutrient and dietary supplement. It is very slightly soluble in water and in alcohol. it improves the biological quality of the total protein in foods containing naturally occurring intact protein.
What are the applications of Application
DL-Cystine is a racemic mixture of the proteinogenic amino acids L-cystine and the non-proteinogenic D-cystine
Definition
ChEBI: A sulfur-containing amino acid obtained by the oxidation of two cysteine molecules which are then linked via a disulfide bond.
Definition
cystine: A molecule resulting fromthe oxidation reaction between thesulphydryl (-SH) groups of two cysteine molecules .This often occurs between adjacentcysteine residues in polypeptides.The resultant disulphide bridges(-S-S-) are important in stabilizingthe structure of protein molecules.
Synthesis Reference(s)
Tetrahedron Letters, 31, p. 5007, 1990 DOI: 10.1016/S0040-4039(00)97790-6
Properties of DL-Cystine
| Melting point: | 227 °C (dec.)(lit.) |
| Boiling point: | 468.2±45.0 °C(Predicted) |
| Density | 1.358 (estimate) |
| refractive index | 1.6000 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | 1 M HCl: soluble |
| form | Powder |
| pka | 2.1(at 35℃) |
| color | White |
| Water Solubility | Soluble in dilute acid and alkali solution, highly soluble in water, not soluble in alcohol. |
| Merck | 14,2782 |
| BRN | 1728095 |
| CAS DataBase Reference | 923-32-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Dl-cystine(923-32-0) |
Safety information for DL-Cystine
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P312:Call a POISON CENTER or doctor/physician if you feel unwell. P330:Rinse mouth. P302+P352:IF ON SKIN: wash with plenty of soap and water. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P403+P233:Store in a well-ventilated place. Keep container tightly closed. |
Computed Descriptors for DL-Cystine
New Products
DL-beta-(3-Bromophenyl)alanine Tetrabutylammonium perchlorate N,O-Dimethylhydroxylamine hydrochloride (RS)-beta-Amino-beta-(4-bromophenyl)propionic acid 2-Amino-5-bromo-4-(trifluoromethyl)pyridine（RM for Indian lab) N,N CARBONYL DIIMIDAZOLE Levothyroxine Impurity-F Montelukast EP Impurity-D/Montelukast USP Related Compound C Atorvastatin FXA Impurity/Atorvastatin Cyclic 6-Hydroxy Impurity Sodium Salt Isosulfan blue Keto N-Oxide Impurity Ivermectin Impurity F N-Nitroso des Methyl Tramadol/N-Nitroso-N-Desmethyl-Tramadol (R)-BoroLeu-(+)-Pinanediol-CF3COOH 1,4-bis(methylsulfonyl)butane 4-(5-amino-1-methyl-1h-benzoimidazol-2-yl)-butyric acid isopropyl ester. 5-Methyl-1,3-benzenediacetonitrile 4-Fluorothiophenol 1-methyl amino-2,4-dinitro benzene CSA (DL-10-Camphorsulfonic Acid) 2-Hydroxy-4-methylnicotinic acid 3-iodo-1H-pyrazolo[3,4-d]pyrimidin-4-amine (2S)-1-((2S,3S)-3-(2-methylbutyl)-4-oxooxetan-2-yl)pentadecan-2-yl formylleucinate 1-(3,5-dichlorophenyl)-2,2,2-trifluoroethane-1-sulfonyl chloride S-(1-(3,5-dichlorophenyl)-2,2,2-trifluoroethyl) ethanethioateRelated products of tetrahydrofuran
You may like
-
Cystine (DL- and meso- mixture) CAS 923-32-0View Details
923-32-0 -
DL-Cystine 98.00% CAS 923-32-0View Details
923-32-0 -
DL-cystine 97% CAS 923-32-0View Details
923-32-0 -
674783-97-2 98+View Details
674783-97-2 -
H-D-TRP(FOR)-OH HCL 98+View Details
367453-01-8 -
3-Amino-3-(4-fluorophenyl)propanoic acid 98+View Details
325-89-3 -
1428243-26-8 98+View Details
1428243-26-8 -
1-aminocyclopentane carbonitrile, HCl 98+View Details
16195-83-8
Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.