Methyl 4-bromobut-2-ynoate CAS 40995-01-5
| CAS No. | 40995-01-5 |
| Molecular Formula | C5H5BrO2 |
| Molecular Weight | 177.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 4-bromobut-2-ynoate is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methyl 4-bromobut-2-ynoate (CAS 40995-01-5) is a high-purity analytical reference standard with the molecular formula C5H5BrO2 and a molecular weight of 177.00 g/mol.
Based on its molecular formula C5H5BrO2, Methyl 4-bromobut-2-ynoate contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 177.00 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures Methyl 4-bromobut-2-ynoate 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 | C5H5BrO2 |
| Molecular Weight | 177.00 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Br-containing |
Related Methyl Standards
- Methyl 2-bromobut-2-enoate (mixture of trans and ciS) (CAS 22966-48-9)
- 4-Bromobut-2-enoyl chloride (CAS 51544-74-2)
- 2-Bromobut-2-enoic acid (CAS 5405-34-5)
- 4-Bromobut-2-enoic Acid (CAS 20629-35-0)
- 4-Bromobut-2-enamide (CAS 118941-93-8)
- Ethyl 4-bromobut-2-ynoate (CAS 39595-70-5)
- Ethyl -4-bromobut-2-enoate (CAS 6065-32-3)
- 2-Bromobut-2-enedioic acid (CAS 584-99-6)
Recommended Standards
- Ethyl 3-bromopropiolate (CAS 41658-03-1)
- Prop-2-yn-1-yl 2-bromoacetate (CAS 26755-52-2)
- 5-Bromo-3-methyl-2(5H)-furanone (CAS 51799-96-3)
- (1,2,3,4-Tetrahydroisoquinolin-7-yl)boronic acid (CAS 1096359-11-3)
- 8-Oh-dpat (CAS 78950-78-4)
- 6,7-Dihydro-5H-cyclopenta[b]pyridine-4-carboxylic acid (CAS 953428-98-3)
- Ethyl 6-iodobenzofuran-2-carboxylate (CAS 1089681-88-8)
- tert-butyl 2-nitro-1H-pyrrole-1-carboxylate (CAS 1514893-97-0)
- (1E)-2-(1-methyl-1H-benzimidazol-2-yl)-1-phenylethanone oxime (CAS 929974-07-2)
- 1-(4-Chlorobenzyl)-1,4-diazepane (CAS 40389-65-9)
- (6-fluoroimidazo[1,2-a]pyridin-3-yl)methanol (CAS 1520373-01-6)
- Ethyl 3-aminothieno[3,2-c]pyridine-2-carboxylate (CAS 187733-13-7)
- N1-(2-Methoxybenzyl)-4-phenyl-1H-imidazole-1,2-diamine (CAS 1614826-51-5)
- Peptide 442 (CAS CATO-CPTD788442)
Why CATO?
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