5-Bromo-6-chloro-4-pyrimidone CAS 89089-19-0
| CAS No. | 89089-19-0 |
| Molecular Formula | C4H2BrClN2O |
| Molecular Weight | 209.43 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 5-Bromo-6-chloro-4-pyrimidone.
5-Bromo-6-chloro-4-pyrimidone (CAS 89089-19-0), molecular formula C4H2BrClN2O and molecular weight 209.43 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Bromo-6-chloro-4-pyrimidone (C4H2BrClN2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 209.43 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.
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 | C4H2BrClN2O |
| Molecular Weight | 209.43 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- Rehmannioside D (CAS 81720-08-3)
- 1,3-Dimethyl-1,5,6,7-tetrahydro-2H-pyrrolo[2,3-d]pyrimidine-2,4(3H)-dione (CAS 39929-83-4)
- 3-Fluoro-4'-(methylsulfonyl)-[1,1'-biphenyl]-4-ol (CAS 1032825-01-6)
- 5-Chloro-7H-pyrrolo[2,3-b]pyridine-6-carboxylic acid (CAS 1246088-49-2)
- 5-Phenyl-3,4-dihydroisoquinolin-1(2H)-one (CAS 1309955-15-4)
- 2-(2-Iodophenyl)propane-1,3-diol (CAS 1493854-02-6)
- 870777-16-5 Boronic acid,B-(1,2-dimethyl-1-propen-1-yl)- CTK5F7730 (CAS 870777-16-5)
- Calcitonin N-Terminal Flanking Peptide (human) (CAS 118277-01-3)
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