5-Bromo-4-hydrazinyl-6-methylpyrimidine CAS 3438-58-2
| CAS No. | 3438-58-2 |
| Molecular Formula | C5H7BrN4 |
| Molecular Weight | 203.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Bromo-4-hydrazinyl-6-methylpyrimidine is closely related to a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Bromo-4-hydrazinyl-6-methylpyrimidine (CAS 3438-58-2), molecular formula C5H7BrN4 and molecular weight 203.04 g/mol, is a CATO reference standard with documented purity and traceability.
5-Bromo-4-hydrazinyl-6-methylpyrimidine (C5H7BrN4) contains a nitrile group, bromine substitution. Halogen substitution raises its density and boiling point; 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.
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 | C5H7BrN4 |
| Molecular Weight | 203.04 g/mol |
| Appearance | Off-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 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.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related Bromo Standards
- 4-Bromo-1-ethyl-1h-pyrazole-3-carbaldehyde (CAS 1001519-36-3)
- 4-Bromo-1-ethyl-1h-pyrazole-5-carbaldehyde (CAS 1001519-37-4)
- 3-Bromo-5,6-dimethyl-1,2-dihydropyrazin-2-one (CAS 100450-13-3)
- 2-Bromo-6-ethoxypyrazine (CAS 1027512-76-0)
- 2-Bromo-5-methoxypyridin-3-amine (CAS 1043688-99-8)
- 2-Bromo-5-ethoxypyrazine (CAS 1060803-83-9)
- 5-Bromo-N2-methyl-2,4-pyrimidinediamine (CAS 1074-49-3)
- 2-Bromo-4-methoxypyridin-3-amine (CAS 109613-97-0)
Recommended Standards
- 5-Bromo-4,6-dimethyl-2(1H)-pyrimidinone (CAS 7781-20-6)
- 5-Bromo-4-methoxy-6-methylpyrimidine (CAS 4319-87-3)
- 5-Bromo-3-methoxypyridin-2-amine, 97% (CAS 42409-58-5)
- 6-Bromo-2-methyl-2,3-dihydroimidazo[2,1-b]oxazole (CAS 591254-81-8)
- 2-fluoro-[1,2,4]triazolo[1,5-a]pyridine (CAS 2387001-46-7)
- Z-3-Dodecenyl E-Crotonate (CAS 104086-73-9)
- 1-(2-Fluorobenzoyl)piperazine hydrochloride (CAS 936240-88-9)
- 5-Amino-2-bromopyridin-3-ol (CAS 1806995-55-0)
- 4-(3-Acetyl-2,5-dimethyl-1H-pyrrol-1-yl)benzoic acid (CAS 870540-39-9)
- (5-(Pyridin-2-yl)isoxazol-3-yl)methanol (CAS 369382-27-4)
- 6-Chloro-5-iodonicotinic Acid (CAS 59782-87-5)
- Trimetozine (CAS 635-41-6)
- (1-(6-(2-Aminoethyl)pyridin-2-yl)cyclopropyl)methanol (CAS 2798826-11-4)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com