THIENO[2,3-B]PYRAZINE-6-CARBOXYLIC ACID, 7-AMINO-2-CHLORO-, ETHYL ESTER CAS 208994-00-7
| CAS No. | 208994-00-7 |
| Molecular Formula | C9H8ClN3O2S |
| Molecular Weight | 257.70 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.
THIENO[2,3-B]PYRAZINE-6-CARBOXYLIC ACID, 7-AMINO-2-CHLORO-, ETHYL ESTER (CAS 208994-00-7) is a high-purity analytical reference standard with the molecular formula C9H8ClN3O2S and a molecular weight of 257.70 g/mol.
Based on its molecular formula C9H8ClN3O2S, THIENO[2,3-B]PYRAZINE-6-CARBOXYLIC ACID, 7-AMINO-2-CHLORO-, ETHYL ESTER contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.70 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), THIENO[2,3-B]PYRAZINE-6-CARBOXYLIC ACID, 7-AMINO-2-CHLORO-, ETHYL ESTER meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H8ClN3O2S |
| Molecular Weight | 257.70 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2016 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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