2,3-Dichloro-5-ethynylpyridine CAS 1256811-44-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1256811-44-5 |
| Molecular Formula | C7H3Cl2N |
| Molecular Weight | 172.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,3-Dichloro-5-ethynylpyridine (CAS 1256811-44-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H3Cl2N. Molecular weight: 172.01 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C7H3Cl2N |
| Molecular Weight | 172.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
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- 2,4-Dichloro-3-ethynylpyridine (CAS 1196156-25-8)
- 2,6-Dichloro-3-ethynylpyridine (CAS 1211529-52-0)
- 2,2-Dichloro-N-(2-hydroxyethyl)acetamide (CAS 6419-44-9)
- 2,2-Dichloro-N-methoxy-N-methylacetamide (CAS 521973-73-9)
- 2,6-Dichloro-4-ethynylpyridine (CAS 250636-60-3)
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- 2,4-Dichloro-5-fluoropyrimidine-2-<SUP>13</SUP>C,<SUP>15</SUP>N<SUB>2</SUB> (CAS 1293994-86-1)
Recommended Standards
- 2,4-Dichlorophenyl isocyanide (CAS 143954-64-7)
- 3,4-Dichlorophenylisocyanide (CAS 1930-84-3)
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- Hydridotetrakis(triphenylphosphine)rhodium(I) (CAS 18284-36-1)
- 3,4,5-Trimethoxy-N-(2-oxo-2-(2-phenylmorpholino)ethyl)benzamide (CAS 954067-17-5)
- 2-((3-Ethyl-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)-N-(naphthalen-1-yl)acetamide (CAS 578734-84-6)
- 87630-35-1 A842303 tri(propan-2-yl)-(1-pyrrolyl)silane tri(propan-2-yl)-pyrrol-1-yl-silane (CAS 87630-35-1)
- 3-Methyl-2-quinoxalinecarboxylic Acid-d4(MQCA-d4) (CAS 2244217-93-2)
- 1-(3-fluorophenyl)propane-1,2-dione (CAS 10557-18-3)
- Semaglutide impurity 48 (CAS CATO-C4X-222648)
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