(R)-5-Cyclopentylpyrazolidin-3-one

About (R)-5-Cyclopentylpyrazolidin-3-one

(R)-5-Cyclopentylpyrazolidin-3-one is an impurity of Ruxolitinib carrying the CAS registry number 2102675-36-3. With the molecular formula C8H14N2O, it has a molar mass of 154.21 g/mol. The IUPAC name is (5R)-5-cyclopentylpyrazolidin-3-one. It is also known as 3-Pyrazolidinone, 5-cyclopentyl-, (5R)- or (5R)-5-Cyclopentyl-3-pyrazolidinone.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Good laboratory practice and suitable PPE are recommended during handling.

As a characterised impurity of Ruxolitinib, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

We offer (R)-5-Cyclopentylpyrazolidin-3-one in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

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

Industries

Related to Ruxolitinib

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

Ruxolitinib impurities

Specifications & identifiers

Chemical identifiers
Product name	(R)-5-Cyclopentylpyrazolidin-3-one
Catalogue No.	VQ-042047
CAS Number	2102675-36-3
IUPAC name	(5R)-5-cyclopentylpyrazolidin-3-one
Molecular formula	C₈H₁₄N₂O
Molecular weight	154.21 g/mol
Exact mass	154.1106
Grade	Reference Standard
HSN code	38229090
InChIKey	WFMWIYMCLOLEQT-SSDOTTSWSA-N
SMILES	C1CCC(C1)[C@H]2CC(=O)NN2
PubChem CID	130203602

Physical properties
Physical form	Solid
LogP (XLogP3)	0.9
H-bond donors / acceptors	2 / 2
TPSA	41.1 Å²

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 (R)-5-Cyclopentylpyrazolidin-3-one?

The CAS Registry Number of (R)-5-Cyclopentylpyrazolidin-3-one is 2102675-36-3. It is also known as 3-Pyrazolidinone, 5-cyclopentyl-, (5R)-, (5R)-5-Cyclopentyl-3-pyrazolidinone, 5-Cyclopentyl-3-pyrazolidinone, (5R)-.

What is the molecular formula and molecular weight of (R)-5-Cyclopentylpyrazolidin-3-one?

(R)-5-Cyclopentylpyrazolidin-3-one has the molecular formula C8H14N2O and a molecular weight of 154.21 g/mol. Its IUPAC name is (5R)-5-cyclopentylpyrazolidin-3-one.

What is (R)-5-Cyclopentylpyrazolidin-3-one used for?

(R)-5-Cyclopentylpyrazolidin-3-one is supplied as a characterised reference material related to Ruxolitinib. 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 (R)-5-Cyclopentylpyrazolidin-3-one can I order?

We supply (R)-5-Cyclopentylpyrazolidin-3-one 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 (R)-5-Cyclopentylpyrazolidin-3-one?

Yes. Every lot of (R)-5-Cyclopentylpyrazolidin-3-one 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 (R)-5-Cyclopentylpyrazolidin-3-one be shipped internationally?

Yes. We export (R)-5-Cyclopentylpyrazolidin-3-one worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.