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Pharmacopeial Impurities (EP / USP / BP)

Tadalafil EP Impurity A

Reference StandardAvailable on request

Buy Tadalafil EP Impurity A (CAS 171596-27-3) from Zemixal: C22H19N3O4, COA and SDS with every lot, worldwide shipping. Quotes within one business day.

Pack sizes
Tadalafil EP Impurity A chemical structure
CAS number171596-27-3
FormulaC22H19N3O4
Molar mass389.4 g/mol
Physical formSolid
HS code38229090
InChIKeyWOXKDUGGOYFFRN-HRAATJIYSA-N
IUPAC name(2R,8S)-2-(1,3-benzodioxol-5-yl)-6-methyl-3,6,17-triazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),11,13,15-tetraene-4,7-dione

About Tadalafil EP Impurity A

Tadalafil EP Impurity A belongs to the Tadalafil reference-standard family in the Zemixal catalogue. Identity at a glance (Reference Standard): CAS 171596-27-3, formula C22H19N3O4 and molar mass 389.4 g/mol. It is handled as a solid.

Where it is used

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

Storage and safety notes

It carries the GHS signal word Warning (H302, H312, H315 and H319), 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. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Tadalafil

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

Tadalafil 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 Tadalafil EP Impurity A
Product nameTadalafil EP Impurity A
Catalogue numberZX-022839
CAS number171596-27-3
IUPAC name(2R,8S)-2-(1,3-benzodioxol-5-yl)-6-methyl-3,6,17-triazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),11,13,15-tetraene-4,7-dione
Molecular formulaC22H19N3O4
Molar mass389.4 g/mol
Exact mass389.1376
GradeReference Standard
Physical formSolid
XLogP32.3
H-bond donors / acceptors1 / 4
Topological polar surface area74.9 Ų
HS code38229090
InChIKeyWOXKDUGGOYFFRN-HRAATJIYSA-N
SMILESCN1CC(=O)N2[C@H](C1=O)CC3=C([C@H]2C4=CC5=C(C=C4)OCO5)NC6=CC=CC=C36
PubChem CID9821704
SynonymsTadalafil - Impurity A, Tadalafil, (6R,12AS)-, Tadalafil specified impurity A, Tadalafil, (6R ,12aS)-, Tadalafil 6R ,12as diastereomer, 6R,12S-Tadalafil, Tadanafil Impurity A, (-)-Tadalafil 6R ,12as diastereomer, (6R ,12as)-tadalafil, Tadalafil IMpurity: IMpurity H, (6R,12aS)-, EX-A2848

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

  • H302Harmful if swallowed
  • H312Harmful in contact with skin
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H332Harmful if inhaled

Precautionary statements P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P321, P330, P332 + P317, P337 + P317, P362 + P364, 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 Tadalafil EP Impurity A
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 Tadalafil EP Impurity A

Which CAS number identifies Tadalafil EP Impurity A?
Tadalafil EP Impurity A is registered under CAS 171596-27-3. You may also see it listed as Tadalafil - Impurity A, Tadalafil, (6R,12AS)-, Tadalafil specified impurity A. Our catalogue number for this item is ZX-022839.
What are the formula and molar mass of Tadalafil EP Impurity A?
For Tadalafil EP Impurity A, its formula is C22H19N3O4 and its molar mass is 389.4 g/mol. The systematic (IUPAC) name is (2R,8S)-2-(1,3-benzodioxol-5-yl)-6-methyl-3,6,17-triazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),11,13,15-tetraene-4,7-dione. InChIKey WOXKDUGGOYFFRN-HRAATJIYSA-N lets you match it in any structure database.
How is Tadalafil EP Impurity A used in pharmaceutical QC?
Tadalafil EP Impurity A is a characterised reference material linked to Tadalafil. 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 Tadalafil EP Impurity A?
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 Tadalafil EP Impurity A?
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 Tadalafil EP Impurity A to my country?
Yes. Because Tadalafil EP Impurity A 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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