3-Bromo-4-(4-methoxyphenyl)-4-oxobut-2-enoic acid CAS 16170-76-6
| CAS No. | 16170-76-6 |
| Molecular Formula | C11H9BrO4 |
| Molecular Weight | 285.09 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 3-Bromo-4-(4-methoxyphenyl)-4-oxobut-2-enoic acid.
3-Bromo-4-(4-methoxyphenyl)-4-oxobut-2-enoic acid (CAS 16170-76-6) is a high-purity analytical reference standard with the molecular formula C11H9BrO4 and a molecular weight of 285.09 g/mol.
Structurally, 3-Bromo-4-(4-methoxyphenyl)-4-oxobut-2-enoic acid (C11H9BrO4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 285.09 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 3-Bromo-4-(4-methoxyphenyl)-4-oxobut-2-enoic acid 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 | C11H9BrO4 |
| Molecular Weight | 285.09 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 sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 3-(8-bromo-2,3-dihydro-1,4-benzodioxin-6-yl)prop-2-enoic acid (CAS 1094225-83-8)
- 4-Bromo-N-cyclopropyl-3-nitrobenzamide (CAS 1096842-91-9)
- 1-(5-Bromo-4-nitroindolin-1-yl)ethan-1-one (CAS 1116339-78-6)
- 5-Bromo-6-methoxy-1H-indazole-3-carboxylic acid methyl ester (CAS 1134328-15-6)
- 5-[(4-bromo-1H-pyrazol-1-yl)methyl]-2-methylfuran-3-carboxylic acid (CAS 1179844-18-8)
- 5-[(4-bromo-1h-pyrazol-1-yl)methyl]-3-methylfuran-2-carboxylic acid (CAS 1183176-76-2)
- Ethyl 5-bromo-7-hydroxybenzofuran-2-carboxylate (CAS 1188265-94-2)
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Recommended Standards
- Ethyl 6-bromo-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-1-carboxylate (CAS 161468-52-6)
- 5-Bromo-3-ethoxybenzofuran-2-carboxylic acid (CAS 1710202-37-1)
- 2-(Difluoromethoxy)-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1445651-59-1)
- 2-(Difluoromethoxy)-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1772607-42-7)
- 6-Cyclobutoxypyridine-2,3-diamine (CAS 1531674-74-4)
- 3-Bromo-2-methylbenzohydrazide (CAS 108485-07-0)
- Tert-butyl 4-(4-amino-3-methylphenyl)piperazine-1-carboxylate (CAS 301672-89-9)
- 2-(n-Methyl2-cyanobenzenesulfonamido)acetic acid (CAS 1000931-63-4)
- 2-(6-Bromo-5-(difluoromethyl)-3-(trifluoromethyl)pyridin-2-yl)acetic acid (CAS 1805046-89-2)
- Methyl 4-amino-5-fluoropicolinate (CAS 1260665-42-6)
- 2-(3,4-Dimethylbenzoyl)pyridine (CAS 102001-19-4)
- Lenalidomide Impurity 4 (CAS 48103-74-8)
- 4-(Difluoromethoxy)-1-naphthoic acid (CAS 1261884-90-5)
- Semaglutide impurity 256 (CAS CATO-C4X-2226256)
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