2H-Thieno[2,3-d][1,3]oxazine-2,4(1H)-dione CAS 103979-54-0
| CAS No. | 103979-54-0 |
| Molecular Formula | C6H3NO3S |
| Molecular Weight | 169.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H3NO3S, 2H-Thieno[2,3-d][1,3]oxazine-2,4(1H)-dione contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 169.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2H-Thieno[2,3-d][1,3]oxazine-2,4(1H)-dione (CAS 103979-54-0), molecular formula C6H3NO3S and molecular weight 169.16 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2H-Thieno[2,3-d][1,3]oxazine-2,4(1H)-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H3NO3S |
| Molecular Weight | 169.16 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related H Standards
- 1H-Thieno[2,3-d][1,2,3]triazole-5-carboxylic acid (CAS 107166-05-2)
- thieno[3,2-b]thiophen-2-ylmethanamine (CAS 874881-30-8)
- thieno[3,2-b]pyridine-6-carbonitrile (CAS 116538-95-5)
- thieno[2,3-b]pyridine-5-carbonitrile (CAS 21344-31-0)
- Thieno[2,3-d]pyrimidine-4-thiol (CAS 14080-55-8)
- thieno[3,2-d]pyrimidine-4-thiol (CAS 16229-24-6)
- Thieno[2,3-b]thiophene-2-carbaldehyde (CAS 31486-85-8)
- Thieno[3,2-b]thiophene-2-carbaldehyde (CAS 31486-86-9)
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