4-Chloro-2-methoxybenzo[d]thiazole CAS 73443-77-3
| CAS No. | 73443-77-3 |
| Molecular Formula | C8H6ClNOS |
| Molecular Weight | 199.66 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.
4-Chloro-2-methoxybenzo[d]thiazole (CAS 73443-77-3) is a high-purity analytical reference standard with the molecular formula C8H6ClNOS and a molecular weight of 199.66 g/mol.
Structurally, 4-Chloro-2-methoxybenzo[d]thiazole (C8H6ClNOS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 199.66 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 4-Chloro-2-methoxybenzo[d]thiazole 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 | C8H6ClNOS |
| Molecular Weight | 199.66 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 8-Chloro-2H-benzo[b][1,4]thiazin-3(4H)-one (CAS 100638-21-9)
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- 6-Chloro-2-(methylthio)benzo[d]oxazole (CAS 1071296-64-4)
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Recommended Standards
- 4-Chloro-2-(methylthio)benzo[d]oxazole (CAS 67932-30-3)
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- 4-Chloro-2-(methylthio)-7H-pyrrolo[2,3-d]pyrimidine, 97% (CAS 57564-94-0)
- 4-Chloro-6-methylthieno[3,2-d]pyrimidin-2-amine (CAS 2091004-93-0)
- 1-{[(2S)-1-(tert-Butoxycarbonyl)pyrrolidinyl]methyl}-1H-1,2,3-triazole-4-carboxylic acid (CAS 1269504-36-0)
- 4-Amino-5-(3-bromophenyl)-4h-1,2,4-triazole-3-thiol (CAS 87239-96-1)
- 2,3:4,6-Di-o-cyclohexylidene-α-D-mannopyranose (CAS 70835-78-8)
- 2-Amino-1-(4-benzyl-1-piperazinyl)-1-ethanonehydrochloride (CAS 1220018-02-9)
- 3-Methoxy-n,2,2,3-tetramethylcyclobutan-1-amine hydrochloride (CAS 1375172-22-7)
- 2,3,4,6-Tetrachlorophenol (CAS 58-90-2)
- (Pyridin-2-ylamino)methanol (CAS 10447-30-0)
- CAS 1039808-70-2 (CAS 1039808-70-2)
- tert-Butyl 3-hydroxy-3-(2,3,5-trifluorophenyl)azetidine-1-carboxylate (CAS 1875533-29-1)
- Semaglutide Impurity 164 (CAS CATO-C4X-2226164)
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