5-Chlorobenzo-2,1,3-thiadiazole CAS 2207-32-1
| CAS No. | 2207-32-1 |
| Molecular Formula | C6H3ClN2S |
| Molecular Weight | 170.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chlorobenzo-2,1,3-thiadiazole (CAS 2207-32-1), molecular formula C6H3ClN2S and molecular weight 170.62 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H3ClN2S, 5-Chlorobenzo-2,1,3-thiadiazole contains a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 170.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 5-Chlorobenzo-2,1,3-thiadiazole 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 | C6H3ClN2S |
| Molecular Weight | 170.62 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- 4-Chlorobenzo[c][1,2,5]thiadiazole (CAS 2207-28-5)
- 5-Chlorobenzo[d][1,2,3]thiadiazole (CAS 29241-15-4)
- 6-Chlorobenzo[d][1,2,3]thiadiazole (CAS 23644-01-1)
- 7-Chlorobenzo[d][1,2,3]thiadiazole (CAS 23621-88-7)
- 6-Chlorobenzo[d][1,3]dioxol-4-amine (CAS 401812-11-1)
- 6-Chlorobenzo[d][1,3]dioxol-5-amine (CAS 76958-07-1)
- 3-Chlorobenzo[c]isothiazole (CAS 34231-96-4)
- 4-Chlorobenzo[d]isothiazole (CAS 25380-61-4)
Recommended Standards
- 2-Chlorothiazolo[4,5-b]pyridine (CAS 152170-30-4)
- 3-Chloropropiophenone(2-d2) (CAS 34236-34-5)
- Tizanidine Impurity 50 (CAS CATO-C4X-144550)
- 3-(2-Chloropyridin-3-yl)propan-1-amine (CAS 1000512-13-9)
- [2-(4-Chlorophenyl)-2-cyclopentylethyl]amine hydrobromide (CAS 1211483-99-6)
- 5-(4-Methylbenzyl)-1,3,4-oxadiazol-2-amine (CAS 1094423-79-6)
- (S)-(3-chloro-4-methoxyphenyl)(cyclopropyl)methanamine (CAS 1213489-83-8)
- 6-(Pyrimidin-4-yloxy)-2-azaspiro[3.3]heptane (CAS 1774895-94-1)
- 2,6-Dichloro-4-(5,5-dimethyl-1,3-dioxan-2-yl)butyrophenone (CAS 898756-99-5)
- 2-((4-Chlorophenyl)thio)ethan-1-ol (CAS 13457-98-2)
- 5H-Pyrrolo[2,3-d]pyrimidin-2-amine, 4-chloro-6,7-dihydro- (CAS 1251761-95-1)
- ethyl 5-tert-butyl-2-oxocyclohexane-1-carboxylate (CAS 13049-54-2)
- 5-Amino-1-(2-fluorobenzyl)-1H-1,2,3-triazole-4-carboxamide (CAS 93416-62-7)
- endo-Arg30-Semaglutide (CAS CATO-C4X-2226281)
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