5-Bromodihydrouracil CAS 1193-76-6
| CAS No. | 1193-76-6 |
| Molecular Formula | C4H5BrN2O2 |
| Molecular Weight | 193.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Bromodihydrouracil (CAS 1193-76-6), molecular formula C4H5BrN2O2 and molecular weight 193.00 g/mol, is a CATO reference standard with documented purity and traceability.
5-Bromodihydrouracil (C4H5BrN2O2) contains an amide group, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C4H5BrN2O2 |
| Molecular Weight | 193.00 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-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 DMSO, DMF, methanol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 2,6-Dichloro-4-fluorobenzaldehyde (CAS 1182709-86-9)
- 3-Bromopiperazine-2,5-dione (CAS 1204388-39-5)
- 3,5-Dichloro-4-fluorobenzaldehyde (CAS 117820-80-1)
- 3,4-Dichloro-2-fluorobenzaldehyde (CAS 1349718-54-2)
- [1,3]Dioxolo[4,5-g]quinoline-7-carbaldehyde (CAS 363135-57-3)
- 6-Chloro-2-iodo-3-pentafluoroethylpyridine (CAS 1204234-34-3)
- Nicorandil Impurity 28 (CAS 34104-46-6)
- 1-(4-Methylbenzyl)-1H-pyrrole-2,5-dione (CAS 42867-34-5)
- 1-(2-Methylimidazo[1,2-a]pyridin-3-yl)-2-morpholinoethan-1-one (CAS 383148-01-4)
- 4-Bromo-3-chloro-5-fluoropyridine (CAS 1211590-18-9)
- (3R,4S,5R,6R)-6-(Acetoxymethyl)-5-(((2R,3R,4S,5R,6R)-3,4-diacetoxy-6-(acetoxymethyl)-5-(((2R,3R,4S,5R,6R)-3,4,5-triacetoxy-6-(acetoxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2,3,4-triyl triacetate (CAS 76821-26-6)
- 1-Benzoyl-3-(4-cyanophenyl)thiourea (CAS 1448-64-2)
- N-Nitroso Tucatinib 2 (CAS CATO-C4X-260526)
- Des-His(1)-Semaglutide (CAS CATO-C4X-2226216)
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