Donepezil Impurity 2

About Donepezil Impurity 2

Donepezil Impurity 2 is an impurity of Donepezil carrying the CAS registry number 36517-91-6. Formula C11H10O4, molecular weight 206.19 g/mol. Systematically, it is named 5,6-dimethoxyindene-1,3-dione. Common synonyms include 5,6-Dimethoxy-1H-indene-1,3(2H)-dione and 5,6-Dimethoxyindane-1,3-dione.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Good laboratory practice and suitable PPE are recommended during handling.

This Donepezil impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer Donepezil Impurity 2 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 Donepezil

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

Donepezil impurities

Specifications & identifiers

Chemical identifiers
Product name	Donepezil Impurity 2
Catalogue No.	VQ-043954
CAS Number	36517-91-6
IUPAC name	5,6-dimethoxyindene-1,3-dione
Molecular formula	C₁₁H₁₀O₄
Molecular weight	206.19 g/mol
Exact mass	206.0579
Grade	Reference Standard
HSN code	38229090
InChIKey	OFQWGNIJXMWOGZ-UHFFFAOYSA-N
SMILES	COC1=C(C=C2C(=O)CC(=O)C2=C1)OC
PubChem CID	12384295

Physical properties
Physical form	Solid
LogP (XLogP3)	1.3
H-bond donors / acceptors	0 / 4
TPSA	52.6 Å²
Synonyms	5,6-Dimethoxy-1H-indene-1,3(2H)-dione, 5,6-Dimethoxyindane-1,3-dione, 1H-Indene-1,3(2H)-dione, 5,6-dimethoxy-, Donepezil-021, Donepezil Impurity 38, 2,3-dihydro-5,6-dimethoxy-1H-indene-1,3-dione, 5,6-dimethoxyindane-1,3-dion, 5,6-Dimethoxy-1,3-indandione, 5,6-dimethoxy-1,3-indanedione, Donepezil impurity 22/5,6-Dimethoxyindane-1,3-dione

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 Donepezil Impurity 2?

The CAS Registry Number of Donepezil Impurity 2 is 36517-91-6. It is also known as 5,6-Dimethoxy-1H-indene-1,3(2H)-dione, 5,6-Dimethoxyindane-1,3-dione, 1H-Indene-1,3(2H)-dione, 5,6-dimethoxy-.

What is the molecular formula and molecular weight of Donepezil Impurity 2?

Donepezil Impurity 2 has the molecular formula C11H10O4 and a molecular weight of 206.19 g/mol. Its IUPAC name is 5,6-dimethoxyindene-1,3-dione.

What is Donepezil Impurity 2 used for?

Donepezil Impurity 2 is supplied as a characterised reference material related to Donepezil. 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 Donepezil Impurity 2 can I order?

We supply Donepezil Impurity 2 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 Donepezil Impurity 2?

Yes. Every lot of Donepezil Impurity 2 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 Donepezil Impurity 2 be shipped internationally?

Yes. We export Donepezil Impurity 2 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.