5H-Cyclopenta[b]pyridine CAS 270-91-7
| CAS No. | 270-91-7 |
| Molecular Formula | C8H7N |
| Molecular Weight | 117.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5H-Cyclopenta[b]pyridine.
5H-Cyclopenta[b]pyridine (CAS 270-91-7) is a high-purity analytical reference standard with the molecular formula C8H7N and a molecular weight of 117.15 g/mol.
Based on its molecular formula C8H7N, 5H-Cyclopenta[b]pyridine contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 117.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C8H7N |
| Molecular Weight | 117.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related H Standards
- 1H-Cyclopenta[b]pyridine (CAS 270-88-2)
- 5H-Cyclopenta[c]pyridine (CAS 270-60-0)
- 7H-Cyclopenta[b]pyridine (CAS 270-92-8)
- 1H-Cyclopenta[d]pyrimidine (CAS 270-95-1)
- 2H-Cyclopenta[d]pyrimidine (CAS 270-97-3)
- 4H-Cyclopenta[d]pyrimidine (CAS 270-96-2)
- 5H-Cyclopenta[d]pyrimidine (CAS 270-98-4)
- 4660-80-4 5-(3-cyclopenta-2,4-dien-1-ylpropyl)cyclopenta-1,3-diene; titanium(4+); dichloride 5-[3-(1-cyclopenta-2,4-dienyl)propyl]cyclopenta-1,3-diene; titanium(4+); dichloride A827085 (CAS 4660-80-4)
Recommended Standards
- 5-ethyl-1,3,4-oxadiazol-2-amine (CAS 3775-61-9)
- 4-Methoxypyrrolidin-3-ol (CAS 473298-33-8)
- 5-Hydroxypentanamide (CAS 29686-12-2)
- 4-Hydroxy-N-methylbutanamide (CAS 37941-69-8)
- 8-Bromo-3-nitroquinolin-4-ol (CAS 2090552-55-7)
- 4-Chloro-N-(2,6-dichlorophenyl)benzamide (CAS 200807-46-1)
- Ethyl 3-[(2-methylcyclohexyl)amino]propanoate (CAS 1099610-35-1)
- 5-(5-Methylthiophen-2-yl)isoxazole (CAS 138716-32-2)
- 6-Fluoro-4-(piperazin-1-yl)quinoline hydrochloride (CAS 1333249-32-3)
- 2-(3-Aminopiperidin-1-yl)-6-ethylpyrimidin-4(3H)-one (CAS 1708428-19-6)
- (S)-2-Amino-1-(2-((isopropyl(methyl)amino)methyl)pyrrolidin-1-yl)ethanone (CAS 1354010-75-5)
- 220421-73-8 KS-00002WRP N-{2-[4-(2-methoxyphenyl)piperazin-1-yl]ethyl}-N-(pyridin-2-yl)pyridin-2-amine (CAS 220421-73-8)
- 3-(4-Methoxyphenyl)cyclopentan-1-ol (CAS 1267388-03-3)
- Galanin Message Associated Peptide (44-59) amide (CAS 125455-59-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com