3,4-Diamino-2,5-dibromopyridine CAS 221241-11-8
| CAS No. | 221241-11-8 |
| Molecular Formula | C5H5Br2N3 |
| Molecular Weight | 266.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3,4-Diamino-2,5-dibromopyridine (C5H5Br2N3) is characterized by a nitrile group, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3,4-Diamino-2,5-dibromopyridine (CAS 221241-11-8), molecular formula C5H5Br2N3 and molecular weight 266.92 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C5H5Br2N3 |
| Molecular Weight | 266.92 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.) | 2020 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Diamino Standards
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Recommended Standards
- 2-Amino-3,5-dibromo-6-methylpyrazine (CAS 74290-66-7)
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- 2,6-Dibromo-N-methylpyrimidin-4-amine (CAS 425425-29-2)
- 3,4-Dibromo-5-methyl-1H-pyrrole-2-carbaldehyde (CAS 38997-06-7)
- (E)-2-(2-Methoxy-6-nitrophenyl)-N,N-dimethylethen-1-amine (CAS 96631-91-3)
- 4-Hydroxy-2,6,6-trimethyl-1-cyclohexenecarboxylic acid (CAS 62218-55-7)
- 3-(Phenylsulfonyl)-1-(3-(thiazol-2-yloxy)azetidin-1-yl)propan-1-one (CAS 1797904-94-9)
- 2-(4-Chlorophenyl)-1-(pyridin-3-yl)ethan-1-one (CAS 31251-54-4)
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- 4-((Tetrahydro-2H-pyran-4-yl)oxy)butan-1-amine (CAS 1250643-50-5)
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