3-Bromo-2-phenyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole CAS 660432-31-5
| CAS No. | 660432-31-5 |
| Molecular Formula | C12H11BrN2 |
| Molecular Weight | 263.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Bromo-2-phenyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (CAS 660432-31-5), molecular formula C12H11BrN2 and molecular weight 263.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Bromo-2-phenyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (C12H11BrN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 263.13 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 | C12H11BrN2 |
| Molecular Weight | 263.13 g/mol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1-(2,2-diethoxyethyl)-1H-pyrazole (CAS 1006682-90-1)
- 2-Bromo-N-(pyridin-2-ylmethyl)aniline (CAS 1019545-29-9)
- 3-Bromo-N-(pyridin-2-ylmethyl)aniline (CAS 1019599-73-5)
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Recommended Standards
- 3-Bromo-2-methoxybiphenyl (CAS 337535-26-9)
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- 3-Bromo-4'-methoxy-1,1'-biphenyl (CAS 74447-72-6)
- (R)-3-(tert-Butyl)-4-(4',6'-dimethoxy-[1,1':3',1''-terphenyl]-5'-yl)-2,3-dihydrobenzo[d][1,3]oxaphosphole (CAS 2351219-89-9)
- 3,6-Dichloroquinolin-8-amine (CAS 158117-56-7)
- 5,5',5'',5'''-Methanetetrayltetrakis(2-hydroxybenzaldehyde) (CAS 1352523-65-9)
- 4,4-Difluoro-1-(2-methylpropyl)cyclohexan-1-amine hydrochloride (CAS 1380300-82-2)
- 2-(2'-(((Tert-Butoxycarbonyl)Amino)Methyl)-[1,1'-Biphenyl]-2-Yl)Acetic Acid (CAS 158066-12-7)
- 2-Amino-5-phenylthiazol-4(5H)-one (CAS 1762-68-1)
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- (1-Benzyl-1h-indol-2-yl)(4-methylpiperazin-1-yl)methanone (CAS 1023485-86-0)
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