2-Chlorobut-3-enoic acid CAS 24253-33-6
| CAS No. | 24253-33-6 |
| Molecular Formula | C4H5ClO2 |
| Molecular Weight | 120.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Chlorobut-3-enoic acid 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.
CATO supplies 2-Chlorobut-3-enoic acid (CAS 24253-33-6), a certified reference material (molecular formula C4H5ClO2, MW 120.53 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 2-Chlorobut-3-enoic acid is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 120.53 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 | C4H5ClO2 |
| Molecular Weight | 120.53 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 | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
Related Chlorobut Standards
- 4-chlorobut-2-enoic acid (CAS 16197-90-3)
- (E)-4-chlorobut-2-enoic acid (CAS 26340-58-9)
- 3-Chlorobut-2-enoic acid (CAS 55831-56-6)
- 4-Chlorobut-2-ynoic acid (CAS 13280-03-0)
- Methyl 4-chlorobut-2-ynoate (CAS 41658-12-2)
- (E)-4-Chlorobut-2-en-1-ol (CAS 1775-39-9)
- 4-Chlorobut-2-en-1-ol (CAS 7523-44-6)
- methyl 2-chlorobut-3-enoate (CAS 51171-63-2)
Recommended Standards
- 2-Chloro-2-dioxene (CAS 57253-40-4)
- 1-Chlorobutane-2,3-dione (CAS 5559-62-6)
- 3-Oxobutanoyl chloride (CAS 39098-85-6)
- Allyl Chloroformate (CAS 2937-50-0)
- 1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269292-14-9)
- 3-(4-Chlorobenzyl)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-ol (CAS 132269-53-5)
- 4-Chloro-3-hydroxyphenylboronic Acid (CAS 915201-06-8)
- 1-(Ethoxycarbonyl)-3,3-difluorocyclobutane-1-carboxylic acid (CAS 1232365-40-0)
- 4-Hydrazinylisoquinoline (CAS 15330-50-4)
- 1,1',1"-((2,4,6-Trimethylbenzene-1,3,5-triyl)tris(methylene))tris(3,5-dimethyl-1H-pyrazole) (CAS 172606-27-8)
- O-((6-methylpyridin-2-yl)methyl)hydroxylamine (CAS 792913-92-9)
- Dihydro-2,4,6-trimethyl-1,3,5-(4H)dithiazine (CAS 94944-51-1)
- Benzyl 3,7-diazabicyclo[4.1.0]Heptane-3-carboxylate (CAS 444188-88-9)
- Semaglutide impurity 55 (CAS CATO-C4X-222655)
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