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Pharmacopeial Impurities (EP / USP / BP)

Sildenafil EP Impurity D

Reference StandardIn stock

Sildenafil EP Impurity D (CAS 1357931-55-5) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Exported from India with full paperwork.

Pack sizes
Sildenafil EP Impurity D chemical structure
CAS number1357931-55-5
FormulaC17H20N4O5S
Molar mass392.4 g/mol
Physical formSolid
HS code38229090
Purity99.5%
InChIKeyDFABUTFBIDMPKZ-UHFFFAOYSA-N
IUPAC name4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-5-yl)benzenesulfonic acid

About Sildenafil EP Impurity D

Sildenafil EP Impurity D is supplied by Zemixal as a characterised reference material for Sildenafil analysis. Identity at a glance (Reference Standard): CAS 1357931-55-5, formula C17H20N4O5S and molar mass 392.4 g/mol. It is handled as a solid.

Typical applications

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

Safe handling

Hazard communication follows GHS (Warning: H315, H319 and H335). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg, 100 mg and 250 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Sildenafil

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

Sildenafil standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Sildenafil EP Impurity D
Product nameSildenafil EP Impurity D
Catalogue numberZX-005992
CAS number1357931-55-5
IUPAC name4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-5-yl)benzenesulfonic acid
Molecular formulaC17H20N4O5S
Molar mass392.4 g/mol
Exact mass392.1154
GradeReference Standard
Purity / assay99.5%
Physical formSolid
XLogP31.3
H-bond donors / acceptors2 / 7
Topological polar surface area131 Ų
HS code38229090
InChIKeyDFABUTFBIDMPKZ-UHFFFAOYSA-N
SMILESCCCC1=NN(C2=C1N=C(NC2=O)C3=C(C=CC(=C3)S(=O)(=O)O)OCC)C
PubChem CID135565561
SynonymsDesmethylpiperazinyl Sildenafil Sulfonic Acid, Demethylpiperazinyl Sildenafil Sulfonic Acid, Des(methylpiperazinyl) sildenafil acid, Sildenafil desmethylpiperazinyl sulfonic acid, Sildenafil citrate impurity D, 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid, 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid, Demethylpiperaziny sildenafil sulfonic acid, Sildenafil-demethylpiperazinyl-sulfonic acid

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 Sildenafil EP Impurity D
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 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 Sildenafil EP Impurity D

Which CAS number identifies Sildenafil EP Impurity D?
Sildenafil EP Impurity D is registered under CAS 1357931-55-5. You may also see it listed as Desmethylpiperazinyl Sildenafil Sulfonic Acid, Demethylpiperazinyl Sildenafil Sulfonic Acid, Des(methylpiperazinyl) sildenafil acid. Our catalogue number for this item is ZX-005992.
What are the formula and molar mass of Sildenafil EP Impurity D?
For Sildenafil EP Impurity D, its formula is C17H20N4O5S and its molar mass is 392.4 g/mol. The systematic (IUPAC) name is 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-5-yl)benzenesulfonic acid. InChIKey DFABUTFBIDMPKZ-UHFFFAOYSA-N lets you match it in any structure database.
How is Sildenafil EP Impurity D used in pharmaceutical QC?
Sildenafil EP Impurity D is a characterised reference material linked to Sildenafil. 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 Sildenafil EP Impurity D?
This listing is Reference Standard grade with 99.5% purity. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Sildenafil EP Impurity D?
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 Sildenafil EP Impurity D to my country?
Yes. Because Sildenafil EP Impurity D 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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