3-Bromo-1,3a-dihydropyrazolo[1,5-a]pyrimidine CAS 1306606-22-3
| CAS No. | 1306606-22-3 |
| Molecular Formula | C6H6BrN3 |
| Molecular Weight | 200.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrile group, bromine substitution, an aromatic ring system, 3-Bromo-1,3a-dihydropyrazolo[1,5-a]pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 200.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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-Bromo-1,3a-dihydropyrazolo[1,5-a]pyrimidine (CAS 1306606-22-3), molecular formula C6H6BrN3 and molecular weight 200.04 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 | C6H6BrN3 |
| Molecular Weight | 200.04 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
- 2-(4-Bromo-5-methyl-1h-pyrazol-1-yl)acetonitrile (CAS 1006471-37-9)
- 3-(4-Bromo-1H-pyrazol-1-yl)propanenitrile (CAS 1007518-24-2)
- 2-(4-Bromo-1h-pyrazol-1-yl)propanenitrile (CAS 1250407-46-5)
- 3-(3-Bromo-1H-pyrazol-1-yl)propanenitrile (CAS 1289266-59-6)
- 2-(4-Bromo-1-methyl-1H-pyrazol-3-yl)acetonitrile (CAS 1310379-44-2)
- 2-(4-Bromo-1-methyl-1H-pyrazol-5-yl)acetonitrile (CAS 1310379-54-4)
- 5-Bromo-1,3-dimethyl-1h-pyrazole-4-carbonitrile (CAS 1341871-95-1)
- 2-Bromo-6,7-dihydro-5H-pyrrolo[2,3-b]pyrazine (CAS 1393554-11-4)
Recommended Standards
- 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)propanoic acid (CAS 1191063-90-7)
- 5-Bromopyridine-2-carboxamidine (CAS 1179533-59-5)
- 6-Bromopyridine-3-carboxamidine (CAS 1346541-66-9)
- 4-Bromopicolinimidamide (CAS 1179533-03-9)
- 3-(3-Methylisoxazol-5-yl)-2-propylquinazolin-4(3H)-one (CAS 90059-38-4)
- 6-Bromo-2-methyl-4-nitro-1H-benzo[d]imidazole (CAS 713530-56-4)
- 4-{2-[(2-Methylbenzyl)oxy]ethyl}piperidinehydrochloride (CAS 1220017-72-0)
- 3-((2-Aminoethyl)thio)propanoic acid (CAS 2442-39-9)
- 2,4,5-Trichloro-6-Methoxyisophthalonitrile (CAS 57531-87-0)
- N-((1-Phenylpyrrolidin-2-yl)methyl)benzo[d]thiazole-2-carboxamide (CAS 1797341-57-1)
- (2,2-Dimethyl-[1,3]-dioxolan-4-yl)-methylamine (2,2-dimethyl-1,3-dioxolan-4-yl)methanamine 22195-47-7 (CAS 22195-47-7)
- 1-(5-Methyl[1,3]oxazolo[4,5-b]pyridin-2-yl)-piperidine-4-carboxylic acid (CAS 1035840-33-5)
- 5-(1,3-Dioxolan-2-yl)-2-thienyl undecyl ketone (CAS 898772-00-4)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
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