2-Chloro-3-ethynylbenzaldehyde CAS 137338-13-7
| CAS No. | 137338-13-7 |
| Molecular Formula | C9H5ClO |
| Molecular Weight | 164.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-3-ethynylbenzaldehyde (C9H5ClO) contains a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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).
2-Chloro-3-ethynylbenzaldehyde (CAS 137338-13-7) is a high-purity analytical reference standard with the molecular formula C9H5ClO and a molecular weight of 164.59 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.
CATO manufactures 2-Chloro-3-ethynylbenzaldehyde 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 | C9H5ClO |
| Molecular Weight | 164.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- 2-Chloroquinoxaline (CAS 1448-87-9)
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- N,N-dimethylthiazole-4-carboxamide (CAS 64649-22-5)
- 1-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(5-(phenylamino)-1,3,4-thiadiazol-2-yl)ethan-1-one (CAS 1326904-70-4)
- Lusutrombopag Impurity 30 (CAS 1110767-19-5)
- N-(2-Acetylphenyl)Decanamide (CAS 1496492-27-3)
- 3-Sialyl-N-acetyllactosamine (CAS 126151-66-4)
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- Ezetimibe Impurity 80 (CAS CATO-C4X-109880)
- (D-Ala1)-Peptide T amide (CAS 106362-34-9)
Why CATO?
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