1,1-Cyclopentanediacetic Anhydride

Name: 1,1-Cyclopentanediacetic Anhydride
Brand: Vaqora Chemicals
SKU: VQ-029561

About 1,1-Cyclopentanediacetic Anhydride

Listed under CAS 5662-95-3, 1,1-Cyclopentanediacetic Anhydride is an impurity of Buspirone available from Vaqora Chemicals. Formula C9H12O3, molecular weight 168.19 g/mol. Systematically, it is named 8-oxaspiro[4.5]decane-7,9-dione. Common synonyms include 3,3-Tetramethyleneglutaric Anhydride and Cyclopentane-1,1-diacetic anhydride.

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. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

Pharmaceutical QC and development laboratories use this impurity standard of Buspirone to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 1,1-Cyclopentanediacetic Anhydride in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Related to Buspirone

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

Buspirone impurities

Specifications & identifiers

Chemical identifiers
Product name	1,1-Cyclopentanediacetic Anhydride
Catalogue No.	VQ-029561
CAS Number	5662-95-3
IUPAC name	8-oxaspiro[4.5]decane-7,9-dione
Molecular formula	C₉H₁₂O₃
Molecular weight	168.19 g/mol
Exact mass	168.0786
Grade	Reference Standard
HSN code	38229090
InChIKey	GFWLMILMVMCJDI-UHFFFAOYSA-N
SMILES	C1CCC2(C1)CC(=O)OC(=O)C2
PubChem CID	79743

Physical properties
Physical form	Solid
LogP (XLogP3)	1.6
H-bond donors / acceptors	0 / 3
TPSA	43.4 Å²
Synonyms	3,3-Tetramethyleneglutaric Anhydride, Cyclopentane-1,1-diacetic anhydride, 8-Oxaspiro(4.5)decane-7,9-dione, 8-oxaspiro[4.5]decan-7,9-dione, 8-Oxaspiro[4.5]-7,9-decanedione, 3,3-tetramethylene glutaric anhydride, .beta.,.beta.-Tetramethyleneglutaric anhydride, 4-Methylpyridine-2-boronicacid, beta,beta-Tetramethyleneglutaric anhydride, tert-butyl 4-(2-aminoethyl)tetrahydro-1(2h)-pyrazinecarboxylate

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 1,1-Cyclopentanediacetic Anhydride?

The CAS Registry Number of 1,1-Cyclopentanediacetic Anhydride is 5662-95-3. It is also known as 3,3-Tetramethyleneglutaric Anhydride, Cyclopentane-1,1-diacetic anhydride, 8-Oxaspiro(4.5)decane-7,9-dione.

What is the molecular formula and molecular weight of 1,1-Cyclopentanediacetic Anhydride?

1,1-Cyclopentanediacetic Anhydride has the molecular formula C9H12O3 and a molecular weight of 168.19 g/mol. Its IUPAC name is 8-oxaspiro[4.5]decane-7,9-dione.

What is 1,1-Cyclopentanediacetic Anhydride used for?

1,1-Cyclopentanediacetic Anhydride is supplied as a characterised reference material related to Buspirone. 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 1,1-Cyclopentanediacetic Anhydride can I order?

We supply 1,1-Cyclopentanediacetic Anhydride 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 1,1-Cyclopentanediacetic Anhydride?

Yes. Every lot of 1,1-Cyclopentanediacetic Anhydride 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 1,1-Cyclopentanediacetic Anhydride be shipped internationally?

Yes. 1,1-Cyclopentanediacetic Anhydride 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.