70-23-5 Ethyl bromopyruvate Propanoic acid, 3-bromo-2-oxo-, ethyl ester Pyruvic acid, bromo-, ethyl ester (8CI) beta-Bromopyruvic acid ethyl ester EINECS 200-729-6 Ethyl 3-bromopyruvate NSC 62182 CAS 70-23-5
| CAS No. | 70-23-5 |
| Molecular Formula | C5H7BrO3 |
| Molecular Weight | 195.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
70-23-5 Ethyl bromopyruvate Propanoic acid, 3-bromo-2-oxo-, ethyl ester Pyruvic acid, bromo-, ethyl ester (8CI) beta-Bromopyruvic acid ethyl ester EINECS 200-729-6 Ethyl 3-bromopyruvate NSC 62182 (CAS 70-23-5), molecular formula C5H7BrO3 and molecular weight 195.01 g/mol, is a CATO reference standard with documented purity and traceability.
70-23-5 Ethyl bromopyruvate Propanoic acid, 3-bromo-2-oxo-, ethyl ester Pyruvic acid, bromo-, ethyl ester (8CI) beta-Bromopyruvic acid ethyl ester EINECS 200-729-6 Ethyl 3-bromopyruvate NSC 62182 (C5H7BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C5H7BrO3 |
| Molecular Weight | 195.01 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
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