2-bromo-2-methylpropanedioic acid diethyl ester 29263-94-3 A819852 diethyl 2-bromanyl-2-methyl-propanedioate CAS 29263-94-3
| CAS No. | 29263-94-3 |
| Molecular Formula | C8H13BrO4 |
| Molecular Weight | 253.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 253.09 g/mol gives 2-bromo-2-methylpropanedioic acid diethyl ester 29263-94-3 A819852 diethyl 2-bromanyl-2-methyl-propanedioate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-bromo-2-methylpropanedioic acid diethyl ester 29263-94-3 A819852 diethyl 2-bromanyl-2-methyl-propanedioate (CAS 29263-94-3), molecular formula C8H13BrO4 and molecular weight 253.09 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-bromo-2-methylpropanedioic acid diethyl ester 29263-94-3 A819852 diethyl 2-bromanyl-2-methyl-propanedioate (C8H13BrO4) contains a carboxylic acid group, 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 253.09 g/mol, it falls into the medium-molecular-weight range. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H13BrO4 |
| Molecular Weight | 253.09 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
Related bromo Standards
- 1-Bromo-2-fluoro-4-(methylsulfonyl)benzene (CAS 1032825-02-7)
- 2-Bromo-4-fluoro-1-(methylsulfonyl)benzene (CAS 1039744-23-4)
- 2-Bromo-1-(5-methyl-1-benzofuran-2-yl)ethan-1-one (CAS 1178862-94-6)
- 1-Bromo-3-fluoro-5-(methylsulfonyl)benzene (CAS 1207970-78-2)
- 2-Bromo-1-(2-methylbenzofuran-3-yl)ethanone (CAS 124617-51-2)
- 5-Bromo-7-ethyl-2-formyl-benzofuran (CAS 137206-73-6)
- 1-Bromo-3-fluoromethanesulfonylbenzene (CAS 1394022-50-4)
- 2-((2-Bromo-2-methylpropanoyl)oxy)-2-methylpropanoic acid (CAS 1431509-30-6)
Recommended Standards
- Prop-2-yn-1-yl 4-bromo-3-methylbenzoate (CAS 2364584-67-6)
- 7612-88-6 Benzenesulfonyl fluoride, 4-(bromomethyl)- 4-(Bromomethyl)benzenesulfonyl fluoride p-Toluenesulfonyl fluoride, alpha-bromo- (CAS 7612-88-6)
- Diethyl 2-(bromomethyl)malonate (CAS 34762-17-9)
- Ramelteon Impurity N40 (CAS 1221160-70-8)
- 2-chloro-7-ethyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 2804210-61-3)
- N-Acetyl-S-methyl-L-cysteine (CAS 16637-59-5)
- Methyl 3-oxo-2-(trifluoromethyl)butanoate (CAS 93885-06-4)
- N-(2-Aminoethyl)-N-(2-(thiophen-3-yl)ethyl)isoquinoline-5-sulfonamide (CAS 651307-19-6)
- 1-(1-Methyl-1h-imidazol-2-yl)-2-propanamine (CAS 910412-84-9)
- N,O-Dibenzoyl-L-tyrosine (CAS 14325-35-0)
- 3-Cyclopropoxy-N-methyl-5-(trifluoromethyl)isonicotinamide (CAS 1243346-83-9)
- 2-(tert-Butoxy)-6-iodopyridine (CAS 949160-18-3)
- Methyl 2-acetylpent-4-ynoate (CAS 101413-11-0)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
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