(Z)-2-Bromobut-2-enal CAS 33718-99-9
| CAS No. | 33718-99-9 |
| Molecular Formula | C4H5BrO |
| Molecular Weight | 148.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (Z)-2-Bromobut-2-enal.
(Z)-2-Bromobut-2-enal (CAS 33718-99-9) is a high-purity analytical reference standard with the molecular formula C4H5BrO and a molecular weight of 148.99 g/mol.
Owing to a hydroxyl group, an ether linkage, bromine substitution, (Z)-2-Bromobut-2-enal is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 148.99 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures (Z)-2-Bromobut-2-enal 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 | 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.) | 1966 |
| Halogen Content | Br-containing |
Related Z Standards
- 4-Bromobut-2-yn-1-ol (CAS 13280-08-5)
- (E)-3-Bromobut-2-enal (CAS 33603-83-7)
- 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-Bromo-4,5-dihydro-1H-imidazole (CAS 59816-54-5)
- 4-bromo-2,3-dihydrofuran (CAS 1430811-55-4)
- 3-Bromocyclobutanone (CAS 23761-24-2)
- 2-bromocyclobutan-1-one (CAS 1192-01-4)
- 1-(2-(Methylsulfonyl)phenyl)ethan-1-ol (CAS 1797106-62-7)
- 4-Amino-N,N,N-trimethylbenzenaminium iodide hydrochloride (CAS 62654-12-0)
- 5-Fluoro-2-methyl-3,4-dihydroisoquinolin-1(2H)-one (CAS 406923-62-4)
- Dimethyl 4'-hydroxy-[1,1'-biphenyl]-3,5-dicarboxylate (CAS 1245828-39-0)
- Methyl 3-fluoro-4-hydroxy-2-methoxybenzoate (CAS 2091676-09-2)
- N-(4-fluorophenyl)-3-((4-nitrobenzyl)thio)thiophene-2-carboxamide (CAS 251097-02-6)
- 3-Allylindole (CAS 16886-09-2)
- N-Methyl-1-(oxetan-3-yl)methanamine (CAS 1408076-16-3)
- 3-(5-hydroxypyridin-3-yl)prop-2-enoic acid (CAS 1807940-38-0)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
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