(H-Cys-OMe)2 · 2 HCl (Disulfide bond) CAS 32854-09-4
| CAS No. | 32854-09-4 |
| Molecular Formula | C8H16N2O4S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(H-Cys-OMe)2 · 2 HCl (Disulfide bond) (C8H16N2O4S2HCl) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
(H-Cys-OMe)2 · 2 HCl (Disulfide bond) (CAS 32854-09-4), molecular formula C8H16N2O4S2HCl and molecular weight 304.80 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H16N2O4S2 2*HCl |
| Molecular Weight | 304.80 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Recommended Standards
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- 3-Bromo-N,4-dimethylaniline, HCl (CAS 1187386-24-8)
- N-(2,3-Dimethylphenyl)-4-methylbenzamide (CAS 346720-46-5)
- Sodium Octanoate-8,8,8-d3 (CAS 1219795-01-3)
- Benzyl (2-oxopyrrolidin-3-yl)carbamate (CAS 42259-95-0)
- 2-(2-Amino-5-(4-(trifluoromethyl)phenyl)pyridin-4-yl)acetic acid (CAS 1261799-39-6)
- 5-(Diphenylphosphanyl)-2-(trifluoromethyl)pyridine (CAS 2408844-78-8)
- 2-Methoxyethyl 4-(2,5-dimethoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 300690-04-4)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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