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197491

Sigma-Aldrich

2,3-Cyclopentenopyridine

98%

Synonym(s):

6,7-Dihydro-5H-cyclopenta[b]pyridine

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About This Item

Empirical Formula (Hill Notation):
C8H9N
CAS Number:
533-37-9
Molecular Weight:
119.16
EC Number:
208-564-1
MDL number:
MFCD00005933
UNSPSC Code:
12352100
PubChem Substance ID:
24851832
NACRES:
NA.22

Assay

98%

refractive index

n20/D 1.544 (lit.)

bp

87-88 °C/11 mmHg (lit.)

density

1.018 g/mL at 25 °C (lit.)

SMILES string

C1Cc2cccnc2C1

InChI

1S/C8H9N/c1-3-7-4-2-6-9-8(7)5-1/h2,4,6H,1,3,5H2

InChI key

KRNSYSYRLQDHDK-UHFFFAOYSA-N

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.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

152.6 °F - closed cup

Flash Point(C)

67 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Aldrichimica Acta, 11, 13-13 (1978)
S Arai et al.
The Japanese journal of antibiotics, 43(1), 1-8 (1990-01-01)
Cefpirome (HR 810) is a new cephalosporin with a 2,3-cyclopentenopyridine group in the 3-position side chain. It was compared with other cephem antibiotics in protective and therapeutic effects on various experimental infections, systemic and local, in mice and rats. HR
Abdulaziz A Al-Saadi et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 71(2), 326-331 (2008-02-12)
The structural properties of 2,3-cyclopentenopyridine (pyrindan) have been investigated using several spectroscopic and computational techniques. The Raman and infrared spectra of the molecule have been recorded and a full vibrational assignment was proposed on the basis of experimental and theoretical
Jonita Stankevičiūtė et al.
Scientific reports, 6, 39129-39129 (2016-12-17)
Pyridinols and pyridinamines are important intermediates with many applications in chemical industry. The pyridine derivatives are in great demand as synthons for pharmaceutical products. Moreover, pyridines are used either as biologically active substances or as building blocks for polymers with

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