Cyclopenta[b]pyridine
- CAS NO.：533-37-9
- Empirical Formula: C8H9N
- Molecular Weight: 119.16
- MDL number: MFCD00005933
- EINECS: 208-564-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 03:49:25
![Cyclopenta[b]pyridine Structural](https://img.chemicalbook.in/CAS/GIF/533-37-9.gif)
What is Cyclopenta[b]pyridine?
Chemical properties
CLEAR COLORLESS TO BROWNISH LIQUID
The Uses of Cyclopenta[b]pyridine
2,?3-?Cyclopentenopyridine is used as reactant/reagent for ruthenium-mediated dual catalytic reactions of isoquinoline via C-H activation and dearomatization for isoquinolone.
General Description
The structural properties of 2,3-cyclopentenopyridine using spectroscopic and computational techniques have been studied. 2,3-Cyclopentenopyridine is present in the side chain of cefpirome (HR 810), a new cephalosporin.
Properties of Cyclopenta[b]pyridine
| Melting point: | 117 °C |
| Boiling point: | 87-88 °C/11 mmHg (lit.) |
| Density | 1.018 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 153 °F |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| pka | 6.19±0.20(Predicted) |
| form | clear liquid |
| color | Colorless to Red to Green |
| CAS DataBase Reference | 533-37-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 5H-1-Pyrindine, 6,7-dihydro-(533-37-9) |
Safety information for Cyclopenta[b]pyridine
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Cyclopenta[b]pyridine
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