Sildenafil EP Impurity F

Name: Sildenafil EP Impurity F
Brand: Vaqora Chemicals
SKU: VQ-006693

About Sildenafil EP Impurity F

Vaqora Chemicals supplies Sildenafil EP Impurity F, a pharmacopeial impurity of Sildenafil registered under CAS number 139755-82-1, specified at 99.97% purity. The compound has the formula C21H28N6O4S, corresponding to a molecular weight of 460.6 g/mol. Systematically, it is named 5-(2-ethoxy-5-piperazin-1-ylsulfonylphenyl)-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one. Common synonyms include N-Desmethyl Sildenafil and Desmethylsildenafil.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

This Sildenafil 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. Stock is available for quick dispatch.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Sildenafil

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

Sildenafil impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Sildenafil EP Impurity F
Catalogue No.	VQ-006693
CAS Number	139755-82-1
IUPAC name	5-(2-ethoxy-5-piperazin-1-ylsulfonylphenyl)-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one
Molecular formula	C₂₁H₂₈N₆O₄S
Molecular weight	460.6 g/mol
Exact mass	460.1893
Grade	Reference Standard
Purity / assay	99.97%
HSN code	38229090
InChIKey	UZTKBZXHEOVDRL-UHFFFAOYSA-N
SMILES	CCCC1=NN(C2=C1N=C(NC2=O)C3=C(C=CC(=C3)S(=O)(=O)N4CCNCC4)OCC)C
PubChem CID	135455980

Physical properties
Physical form	Solid
LogP (XLogP3)	1
H-bond donors / acceptors	2 / 8
TPSA	126 Å²
Synonyms	N-Desmethyl Sildenafil, Desmethylsildenafil, N-Desmethylsildenafil, desmethyl sildenafil, N-Demethylsildenafil, Sildenafil EP Impurity F (N-Desmethyl Sildenafil), Sildenafil N-Desmethyl Metabolite, N-Desmethyl sildenafil (UK-103,320), N-Desmethylsildenafil (UK-103,320) (M4)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, 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 Sildenafil EP Impurity F?

The CAS Registry Number of Sildenafil EP Impurity F is 139755-82-1. It is also known as N-Desmethyl Sildenafil, Desmethylsildenafil, N-Desmethylsildenafil.

What is the molecular formula and molecular weight of Sildenafil EP Impurity F?

Sildenafil EP Impurity F has the molecular formula C21H28N6O4S and a molecular weight of 460.6 g/mol. Its IUPAC name is 5-(2-ethoxy-5-piperazin-1-ylsulfonylphenyl)-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one.

What is Sildenafil EP Impurity F used for?

Sildenafil EP Impurity F is supplied as a characterised reference material related to Sildenafil. 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 Sildenafil EP Impurity F can I order?

We supply Sildenafil EP Impurity F in Reference Standard (99.97%) 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 Sildenafil EP Impurity F?

Yes. Every lot of Sildenafil EP Impurity F 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 Sildenafil EP Impurity F be shipped internationally?

Yes. Sildenafil EP Impurity F 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.