3-Amino-4-bromopyrazole CAS 16461-94-2
| CAS No. | 16461-94-2 |
| Molecular Formula | C3H4BrN3 |
| Molecular Weight | 161.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Amino-4-bromopyrazole (CAS 16461-94-2) is a high-purity analytical reference standard with the molecular formula C3H4BrN3 and a molecular weight of 161.99 g/mol.
Owing to a nitrile group, bromine substitution, 3-Amino-4-bromopyrazole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 161.99 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C3H4BrN3 |
| Molecular Weight | 161.99 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 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Amino Standards
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Recommended Standards
- 3-Bromo-5-methyl-1H-1,2,4-triazole (CAS 15777-57-8)
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- 2-Bromo-1H-imidazol-4-amine (CAS 1373233-52-3)
- 1-Bromo-1H-pyrazol-5-amine (CAS 1823380-61-5)
- [β-Asp8]Terlipressin TFA (CAS CATO-C4X-219318)
- cis-(3-amino-1-methyl-cyclobutyl)carbamic acid tert-butyl ester (CAS 1408076-04-9)
- (Z)-cyclooct-4-en-1-yltrimethoxysilane (CAS 67592-37-4)
- n-(3-Carbamothioylphenyl)-2-(morpholin-4-yl)acetamide (CAS 848369-72-2)
- tert-Butyl 3-(Azetidin-3-yl)pyrrolidine-1-carboxylate (CAS 1314771-82-8)
- Ethyl 5-(hydroxymethyl)picolinate (CAS 50501-35-4)
- 2-(2-Methyl-4,5-dihydro-1H-imidazol-1-yl)ethan-1-ol (CAS 695-94-3)
- Dihydrokaempferol-3-glucoside (CAS 31049-08-8)
- 2-Cyano-N-(4-nitrophenyl)-2-(triphenylphosphoranylidene)acetamide (CAS 919365-93-8)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
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