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API Impurities

1,1-Cyclopentanediacetic Anhydride

Reference StandardAvailable on request

Buy 1,1-Cyclopentanediacetic Anhydride (CAS 5662-95-3) from Zemixal. Request a quote with price, lead time and documents.

Pack sizes
1,1-Cyclopentanediacetic Anhydride chemical structure
CAS number5662-95-3
FormulaC9H12O3
Molar mass168.19 g/mol
Physical formSolid
HS code38229090
InChIKeyGFWLMILMVMCJDI-UHFFFAOYSA-N
IUPAC name8-oxaspiro[4.5]decane-7,9-dione

About 1,1-Cyclopentanediacetic Anhydride

Analytical teams working on Buspirone use 1,1-Cyclopentanediacetic Anhydride as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 5662-95-3, formula C9H12O3 and molar mass 168.19 g/mol. It is handled as a solid.

Use cases we see most often

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

Storage and safety notes

It carries the GHS signal word Warning (H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Buspirone

See every impurity, metabolite and related compound we list for this API.

Buspirone standards

Typical uses

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

Applications

Specifications and identifiers

Specifications of 1,1-Cyclopentanediacetic Anhydride
Product name1,1-Cyclopentanediacetic Anhydride
Catalogue numberZX-028385
CAS number5662-95-3
IUPAC name8-oxaspiro[4.5]decane-7,9-dione
Molecular formulaC9H12O3
Molar mass168.19 g/mol
Exact mass168.0786
GradeReference Standard
Physical formSolid
XLogP31.6
H-bond donors / acceptors0 / 3
Topological polar surface area43.4 Ų
HS code38229090
InChIKeyGFWLMILMVMCJDI-UHFFFAOYSA-N
SMILESC1CCC2(C1)CC(=O)OC(=O)C2
PubChem CID79743
Synonyms3,3-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

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • 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 summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 1,1-Cyclopentanediacetic Anhydride
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 1,1-Cyclopentanediacetic Anhydride

Which CAS number identifies 1,1-Cyclopentanediacetic Anhydride?
1,1-Cyclopentanediacetic Anhydride is registered under CAS 5662-95-3. You may also see it listed as 3,3-Tetramethyleneglutaric Anhydride, Cyclopentane-1,1-diacetic anhydride, 8-Oxaspiro(4.5)decane-7,9-dione. Our catalogue number for this item is ZX-028385.
What are the formula and molar mass of 1,1-Cyclopentanediacetic Anhydride?
For 1,1-Cyclopentanediacetic Anhydride, its formula is C9H12O3 and its molar mass is 168.19 g/mol. The systematic (IUPAC) name is 8-oxaspiro[4.5]decane-7,9-dione. InChIKey GFWLMILMVMCJDI-UHFFFAOYSA-N lets you match it in any structure database.
How is 1,1-Cyclopentanediacetic Anhydride used in pharmaceutical QC?
1,1-Cyclopentanediacetic Anhydride is a characterised reference material linked to Buspirone. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for 1,1-Cyclopentanediacetic Anhydride?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with 1,1-Cyclopentanediacetic Anhydride?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship 1,1-Cyclopentanediacetic Anhydride to my country?
Yes. Because 1,1-Cyclopentanediacetic Anhydride is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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