<SC>L</SC>-Cystine-1,1′-<SUP>13</SUP>C<SUB>2</SUB> CAS 136743-62-9
| CAS No. | 136743-62-9 |
| Molecular Formula | C4[13C]2H12N2O4S2 |
| Molecular Weight | 242.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
<SC>L</SC>-Cystine-1,1′-<SUP>13</SUP>C<SUB>2</SUB> (CAS 136743-62-9), molecular formula C4[13C]2H12N2O4S2 and molecular weight 242.29 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C4[13C]2H12N2O4S2, <SC>L</SC>-Cystine-1,1′-<SUP>13</SUP>C<SUB>2</SUB> contains a carbohydrate-derived structure, an amide group, a sulfone group; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 242.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C4[13C]2H12N2O4S2 |
| Molecular Weight | 242.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
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