Penta-2,4-dienoyl chloride CAS 20448-91-3
| CAS No. | 20448-91-3 |
| Molecular Formula | C5H5ClO |
| Molecular Weight | 116.55 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.
Penta-2,4-dienoyl chloride (CAS 20448-91-3), molecular formula C5H5ClO and molecular weight 116.55 g/mol, is a CATO reference standard with documented purity and traceability.
Penta-2,4-dienoyl chloride (C5H5ClO) contains a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Penta-2,4-dienoyl chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H5ClO |
| Molecular Weight | 116.55 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
Related Penta Standards
- Methyl penta-2,4-dienoate (CAS 1515-75-9)
- Ethyl penta-2,4-dienoate (CAS 13038-12-5)
- (E)-Penta-2,4-dienoic acid (CAS 21651-12-7)
- (Z)-Penta-2,4-dienoic acid (CAS 29739-67-1)
- Penta-2,3-dienoic acid (CAS 64788-20-1)
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Recommended Standards
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- 2-((4-Methylquinolin-2-yl)amino)acetic acid (CAS 1427027-44-8)
- 3-(2-iodanylphenyl)propanoic acid 3-(2-iodophenyl)propanoic acid 96606-95-0 A845618 (CAS 96606-95-0)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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