4-Bromobut-2-yn-1-ol CAS 13280-08-5
| CAS No. | 13280-08-5 |
| Molecular Formula | C4H5BrO |
| Molecular Weight | 148.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-Bromobut-2-yn-1-ol (C4H5BrO) contains a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 148.99 g/mol, it falls into the low-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
4-Bromobut-2-yn-1-ol (CAS 13280-08-5), molecular formula C4H5BrO and molecular weight 148.99 g/mol, is a CATO reference standard with documented purity and traceability.
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-Bromobut-2-yn-1-ol 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 | C4H5BrO |
| Molecular Weight | 148.99 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 | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Br-containing |
Related Bromobut Standards
- (E)-3-Bromobut-2-enal (CAS 33603-83-7)
- (Z)-2-Bromobut-2-enal (CAS 33718-99-9)
- 2-bromobut-2-enal (CAS 24247-53-8)
- 4-bromobut-3-yn-1-ol (CAS 4544-38-1)
- 3-Bromobut-3-en-1-amine (CAS 328058-75-9)
- 4-bromobut-3-en-1-ol (CAS 306749-29-1)
- (2E)-4-Bromobut-2-enenitrile, E (CAS 37590-23-1)
- (E)-2-Bromobut-2-enenitrile (CAS 24325-95-9)
Recommended Standards
- 2-bromocyclobutan-1-one (CAS 1192-01-4)
- 4-bromo-2,3-dihydrofuran (CAS 1430811-55-4)
- 4,6-Dichloropyrimidine (CAS 1193-21-1)
- Resmetirom Impurity 1 (CAS 141-30-0)
- 5-Fluoro-4-iodo-1-(tetrahydro-2H-pyran-3-yl)-1H-pyrazole (CAS 2091478-01-0)
- 1-(3,5-Bis(trifluoromethyl)phenyl)-3-(2-methoxybenzyl)thiourea (CAS 1024572-83-5)
- 2-Phenylpyrazolo[1,5-a]pyridine-3-carbaldehyde (CAS 71727-37-2)
- 1-Benzyl-2-imino-8-methyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2,3-d]pyrimidine-3-carbonitrile (CAS 302936-84-1)
- 7-Iodoisoquinoline-1,3(2H,4H)-dione (CAS 1260649-46-4)
- tert-Butyl (2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-yl)carbamate (CAS 1798843-13-6)
- (R)-1-(4-chloro-3-fluorophenyl)ethan-1-amine (CAS 1114559-14-6)
- 1-((Tetrahydro-2h-pyran-4-yl)methyl)cyclopropan-1-amine (CAS 1513980-24-9)
- 5-bromo-3-nitro-1H-indazole (CAS 921609-47-4)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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