4-Bromo-6,7-dihydro-5H-cyclopenta[d]pyrimidine CAS 1340044-87-2
| CAS No. | 1340044-87-2 |
| Molecular Formula | C7H7BrN2 |
| Molecular Weight | 199.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Bromo-6,7-dihydro-5H-cyclopenta[d]pyrimidine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
4-Bromo-6,7-dihydro-5H-cyclopenta[d]pyrimidine (CAS 1340044-87-2) is a high-purity analytical reference standard with the molecular formula C7H7BrN2 and a molecular weight of 199.05 g/mol.
Based on its molecular formula C7H7BrN2, 4-Bromo-6,7-dihydro-5H-cyclopenta[d]pyrimidine contains a nitrile group, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 199.05 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C7H7BrN2 |
| Molecular Weight | 199.05 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.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3-Bromo-6-cyclopropylpyridazine (CAS 1046816-40-3)
- 4-Bromo-2-cyclopropylpyrimidine (CAS 1086381-83-0)
- 4-Bromo-6-cyclopropylpyrimidine (CAS 1086382-13-9)
- 2-Bromo-5-cyclopropylpyrazine (CAS 1086382-78-6)
- 2-Bromo-6-cyclopropylpyrazine (CAS 1086382-98-0)
- 5-Bromo-2,3-dihydro-7-azaindole (CAS 115170-40-6)
- 5-Bromo-1,5-dihydroimidazo[1,2-a]pyridine (CAS 1160995-08-3)
- 7-Bromo-1H,2H,3H-pyrrolo[3,2-c]pyridine (CAS 1198293-24-1)
Recommended Standards
- 5-Bromo-2-(prop-1-en-2-yl)pyrimidine (CAS 1314354-16-9)
- 5-Bromo-4-cyclopropylpyrimidine (CAS 1346697-39-9)
- 4-Bromo-1-ethyl-1H-pyrrole-2-carbonitrile (CAS 1308384-54-4)
- 2-Bromo-5-cyclopropylpyrimidine (CAS 1353855-47-6)
- 5-((4-Chlorophenyl)sulfonyl)-N,N-dimethyl-1,2,3-thiadiazole-4-carboxamide (CAS 306977-08-2)
- 2-Bromo-N-(4-(tert-butyl)phenyl)acetamide (CAS 32428-68-5)
- ethyl 6-(chloromethyl)-4-[4-methoxy-3-(methoxymethyl)phenyl]-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 832740-12-2)
- N,N-Diethylbenzo[d]isothiazol-3-amine (CAS 22961-84-8)
- 2-(1-Chlorovinyl)pyridine (CAS 179418-20-3)
- 3-[(2-chloroacetyl)amino]-5-(4-fluorophenyl)thiophene-2-carboxamide (CAS 648410-19-9)
- 3-(4-Oxo-4,5-dihydro-thiazol-2-ylamino)-benzoic acid (CAS 432013-04-2)
- 2-[hydroxy(methyl)phosphoryl]benzoic acid (CAS 55918-57-5)
- C-[1-(4-Methoxy-benzyl)-piperidin-4-yl]-methylamine dihydrochloride (CAS 1185293-66-6)
- C-Peptide (human) (CAS 33017-11-7)
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