4H-Thieno[2,3-b]thiopyran-2-sulfonyl chloride,5,6-dihydro-6-methyl-4-oxo- CAS 120279-87-0
| CAS No. | 120279-87-0 |
| Molecular Formula | C8H7ClO3S3 |
| Molecular Weight | 282.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4H-Thieno[2,3-b]thiopyran-2-sulfonyl chloride,5,6-dihydro-6-methyl-4-oxo- 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.
4H-Thieno[2,3-b]thiopyran-2-sulfonyl chloride,5,6-dihydro-6-methyl-4-oxo- (CAS 120279-87-0) is a high-purity analytical reference standard with the molecular formula C8H7ClO3S3 and a molecular weight of 282.79 g/mol.
Based on its molecular formula C8H7ClO3S3, 4H-Thieno[2,3-b]thiopyran-2-sulfonyl chloride,5,6-dihydro-6-methyl-4-oxo- contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 282.79 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H7ClO3S3 |
| Molecular Weight | 282.79 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 3 |
Related H Standards
- 1-{thieno[2,3-b]quinoline-2-carbonyl}pyrrolidine (CAS 478079-43-5)
- 5-{thieno[2,3-b]quinolin-2-yl}-1,3,4-oxadiazole-2-thiol (CAS 439112-41-1)
- Thieno[2,3-c]pyridine-3-carboxamide, 2-amino-4,5,6,7-tetrahydro-6-(phenylmethyl)- (CAS 34959-32-5)
- 1-(6-Methyl-thieno[2,3-d]pyrimidin-4-yl)-piperidine-4-carboxylic acid (CAS 831242-24-1)
- Methyl 1-{thieno[3,2-c]pyridin-4-yl}piperidine-4-carboxylate (CAS 1354954-10-1)
- Ethyl 1-(thieno[3,2-d]pyrimidin-4-yl)piperidine-4-carboxylate (CAS 910037-27-3)
- 5-(Thieno[2,3-d]pyrimidin-4-ylamino)naphthalen-1-ol (CAS 852678-17-2)
- Potassium 4-(thieno[3,2-b]pyridin-7-yl)benzoate (CAS 2097893-99-5)
Recommended Standards
- 1-(5-Chloro-2-methoxyphenyl)-4,4-dimethyl-1,4-dihydropyrimidine-2-thiol (CAS 1142213-10-2)
- 5-Chloro-4-methyl-N-((tetrahydrofuran-2-yl)methyl)benzo[d]thiazol-2-amine (CAS 1219905-40-4)
- 1-(3-Chloro-4-methoxyphenyl)-4,4-dimethyl-1,4-dihydropyrimidine-2-thiol (CAS 1142213-09-9)
- (5-Chloro-1-methyl-3-((p-tolylthio)methyl)-1H-pyrazol-4-yl)methanol (CAS 318234-43-4)
- (4-Chloro-3-fluorophenyl)(phenyl)methanamine (CAS 1702821-28-0)
- Methyl 2-((tert-butoxycarbonyl)amino)-3-(3-hydroxyphenyl)propanoate (CAS 282100-79-2)
- n-Butyl-4-methoxy-2-methylaniline (CAS 1339212-67-7)
- 2-(4-Methoxy-3,5-dimethylphenyl)-4-methylpyrrolidine (CAS 603068-63-9)
- 6-Fluoro-2-methylquinazoline (CAS 16499-46-0)
- Methyl (S)-2-(1-acetylpyrrolidin-2-yl)acetate (CAS 763105-85-7)
- 4-Chloro-5-methylpyridin-3-ol (CAS 1261269-38-8)
- 1-(4-Fluorophenyl)but-3-en-1-ol (CAS 136185-86-9)
- 3,4-Dimethoxybiphenyl (CAS 17423-55-1)
- HA Peptide (CAS 92000-76-5)
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