Ethyl 3,6-dichloro-1-benzothiophene-2-carboxylate CAS 21211-19-8
| CAS No. | 21211-19-8 |
| Molecular Formula | C11H8Cl2O2S |
| Molecular Weight | 275.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ethyl 3,6-dichloro-1-benzothiophene-2-carboxylate is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Ethyl 3,6-dichloro-1-benzothiophene-2-carboxylate (CAS 21211-19-8), a certified reference material (molecular formula C11H8Cl2O2S, MW 275.15 g/mol) for analytical method development and quality control.
Structurally, Ethyl 3,6-dichloro-1-benzothiophene-2-carboxylate (C11H8Cl2O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 275.15 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Ethyl 3,6-dichloro-1-benzothiophene-2-carboxylate 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 | C11H8Cl2O2S |
| Molecular Weight | 275.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1963 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
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Recommended Standards
- Boronic acid, b-[3-[(cyclohexylethylamino)carbonyl]phenyl]- (CAS 874288-37-6)
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- N-(2-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetamide (CAS 269410-12-0)
- 4-(3-Methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)benzoic acid (CAS 692271-32-2)
- 6-Bromo-3-iodo-1-methyl-1H-indazole (CAS 1260741-78-3)
- 1-Cyanato-4-nitrobenzene (CAS 1129-38-0)
- N'-(4-Chloro-3-nitrobenzylidene)-4-((4-methylbenzyl)oxy)benzohydrazide (CAS 320423-64-1)
- [1-(5-Bromo-Pyridin-2-Yl)-1h-[1,2,3]Triazol-4-Yl]-Methanol (CAS 856867-65-7)
- 2-Chloro-6-iodo-3-methoxy-4-nitropyridine (CAS 2140305-62-8)
- 2-Amidinopyrimidine hydrochloride (CAS 138588-40-6)
- methyl 8-chloro-1,7-naphthyridine-5-carboxylate (CAS 1424941-35-4)
- Ethyl 5-oxo-4,5-dihydropyrazolo[1,5-a]quinazoline-3-carboxylate (CAS 25468-51-3)
- Palmitoyl hexapeptide-6 (CAS 891498-01-4)
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