Pyrindan

About Pyrindan

Pyrindan is an impurity of Cefpirome carrying the CAS registry number 533-37-9. Its molecular formula is C8H9N and its molecular weight is 119.16 g/mol. The IUPAC name is 6,7-dihydro-5H-cyclopenta[b]pyridine. Common synonyms include 2,3-Cyclopentenopyridine and 5H-1-Pyrindine, 6,7-dihydro-.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

This Cefpirome impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Cefpirome

View every impurity, metabolite and intermediate we list for Cefpirome.

Cefpirome impurities

Specifications & identifiers

Chemical identifiers
Product name	Pyrindan
Catalogue No.	VQ-044215
CAS Number	533-37-9
IUPAC name	6,7-dihydro-5H-cyclopenta[b]pyridine
Molecular formula	C₈H₉N
Molecular weight	119.16 g/mol
Exact mass	119.0735
Grade	Reference Standard
HSN code	38229090
InChIKey	KRNSYSYRLQDHDK-UHFFFAOYSA-N
SMILES	C1CC2=C(C1)N=CC=C2
PubChem CID	68292

Physical properties
Physical form	Solid
LogP (XLogP3)	1.5
H-bond donors / acceptors	0 / 1
TPSA	12.9 Å²
Synonyms	2,3-Cyclopentenopyridine, 5H-1-Pyrindine, 6,7-dihydro-, 6,7-Dihydro-5H-cyclopenta(b)pyridine, 5H-cyclopenta[b]pyridine, 6,7-dihydro-, 6,7-dihydro-5H-[1]pyrindine, 6,7Dihydro5Hcyclopenta(b)pyridine, Cyclopenta[b]pyridine, 5H,6H,7H-cyclopenta[b]pyridine, 2,3-Cyclopenteno pyridine, 5H-1-Pyrindene, 6,7-dihydro-, 6,7-Dihydro-5H-cyclopenta[b]pyridine #

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Pyrindan?

The CAS Registry Number of Pyrindan is 533-37-9. It is also known as 2,3-Cyclopentenopyridine, 5H-1-Pyrindine, 6,7-dihydro-, 6,7-Dihydro-5H-cyclopenta(b)pyridine.

What is the molecular formula and molecular weight of Pyrindan?

Pyrindan has the molecular formula C8H9N and a molecular weight of 119.16 g/mol. Its IUPAC name is 6,7-dihydro-5H-cyclopenta[b]pyridine.

What is Pyrindan used for?

Pyrindan is supplied as a characterised reference material related to Cefpirome. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Pyrindan can I order?

We supply Pyrindan in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Pyrindan?

Yes. Every lot of Pyrindan is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Pyrindan be shipped internationally?

Yes. Pyrindan is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.