4-Chloro-2-ethynylthiazole CAS 2377034-37-0
| CAS No. | 2377034-37-0 |
| Molecular Formula | C5H2ClNS |
| Molecular Weight | 143.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Chloro-2-ethynylthiazole 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.
4-Chloro-2-ethynylthiazole (CAS 2377034-37-0), molecular formula C5H2ClNS and molecular weight 143.59 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, chlorine substitution, 4-Chloro-2-ethynylthiazole is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 143.59 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C5H2ClNS |
| Molecular Weight | 143.59 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-5-ethynyl-1,3-thiazole (CAS 1909337-22-9)
- 5-Chloro-6-methylpyridin-2-ol (CAS 103997-23-5)
- N-(3-Chloro-phenyl)hydroxylamine (CAS 10468-17-4)
- (5-Chloro pyrazin-2-yl) Methanamine (CAS 1060814-53-0)
- 4-Chloro-3-methylpyridine 1-Oxide (CAS 1073-34-3)
- 2-Chloro-3-hydrazinylpyridine (CAS 117087-45-3)
- 5-Chloro-2-methylpyridin-4(1H)-one (CAS 1196157-19-3)
- 2-Chloro-1-(1H-pyrrol-3-yl)ethanone (CAS 122450-28-6)
Recommended Standards
- 2-Chloroethanesulfonamide (CAS 859758-42-2)
- N-Methylchloromethanesulfonamide (CAS 41881-81-6)
- 1-chloroethane-1-sulfonamide (CAS 23915-18-6)
- 1-(chloromethyl)cyclopentane-1-carbonitrile (CAS 112906-02-2)
- 4-Bromo-N-isopropyl-2-methoxybenzamide (CAS 1257664-91-7)
- 1-Benzyl-3-(5-nitrofuran-2-yl)-1H-pyrazole-4-carboxamide (CAS 61651-04-5)
- 5-Methylpyrazolo[1,5-a]pyrimidin-2-amine (CAS 2137721-53-8)
- 5,6-Dihydro-Imidazo[4,5,1-jk][1]benzazepine-2,7(1H,4H)-dione (CAS 92260-81-6)
- 2-Chloro-1-(2-(pyridin-3-yl)pyrrolidin-1-yl)ethan-1-one (CAS 1153986-67-4)
- CAS CATO-C4X-34216 (CAS CATO-C4X-34216)
- m-PEG4-phosphonic acid (CAS 1872433-62-9)
- 3-(3,4-Difluorophenyl)pyrrolidine (CAS 848822-98-0)
- 5-(2-Bromoethyl)-1,2,3-trifluorobenzene (CAS 181806-29-1)
- Peptide 442 (CAS CATO-CPTD788442)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com