4-Iodo-1-butyne CAS 43001-25-8
| CAS No. | 43001-25-8 |
| Molecular Formula | C4H5I |
| Molecular Weight | 179.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to iodine substitution, 4-Iodo-1-butyne is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 179.99 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.
4-Iodo-1-butyne (CAS 43001-25-8) is a high-purity analytical reference standard with the molecular formula C4H5I and a molecular weight of 179.99 g/mol.
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), 4-Iodo-1-butyne 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 | C4H5I |
| Molecular Weight | 179.99 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | I-containing |
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Recommended Standards
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- 2-Chloro-2-Fluorocyclohexanone (CAS 35365-22-1)
- 4-Iodo-2,3-dimethylaniline (CAS 117832-11-8)
- (R)-1-(3,5-Dimethoxyphenyl)propan-1-amine (CAS 1213087-13-8)
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