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Pharmacopeial Impurities (EP / USP / BP)

Methylprednisolone EP Impurity A

Reference StandardAvailable on request

Buy Methylprednisolone EP Impurity A (CAS 91523-05-6) from Zemixal. Request a quote with price, lead time and documents.

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Methylprednisolone EP Impurity A chemical structure
CAS number91523-05-6
FormulaC22H28O5
Molar mass372.5 g/mol
Physical formSolid
HS code38229090
InChIKeySVYCRJXQZUCUND-PQXSVQADSA-N
IUPAC name(6S,8S,9S,10R,13S,14S,17R)-17-hydroxy-17-(2-hydroxyacetyl)-6,10,13-trimethyl-6,7,8,9,12,14,15,16-octahydrocyclopenta[a]phenanthrene-3,11-dione

About Methylprednisolone EP Impurity A

Analytical teams working on Methylprednisolone use Methylprednisolone EP Impurity A as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 91523-05-6, formula C22H28O5 and molar mass 372.5 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Handling and storage

It carries the GHS signal word Warning (H302), 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. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Methylprednisolone

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

Methylprednisolone 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 Methylprednisolone EP Impurity A
Product nameMethylprednisolone EP Impurity A
Catalogue numberZX-022126
CAS number91523-05-6
IUPAC name(6S,8S,9S,10R,13S,14S,17R)-17-hydroxy-17-(2-hydroxyacetyl)-6,10,13-trimethyl-6,7,8,9,12,14,15,16-octahydrocyclopenta[a]phenanthrene-3,11-dione
Molecular formulaC22H28O5
Molar mass372.5 g/mol
Exact mass372.1937
GradeReference Standard
Physical formSolid
XLogP31.8
H-bond donors / acceptors2 / 5
Topological polar surface area91.7 Ų
HS code38229090
InChIKeySVYCRJXQZUCUND-PQXSVQADSA-N
SMILESC[C@H]1C[C@H]2[C@@H]3CC[C@@]([C@]3(CC(=O)[C@@H]2[C@@]4(C1=CC(=O)C=C4)C)C)(C(=O)CO)O
PubChem CID124653
Synonyms6a-Methyl Prednisone, Methylprednisolone - Impurity A, 6-Methylprednisone, Pregna-1,4-diene-3,11,20-trione, 17,21-dihydroxy-6-methyl-, (6alpha)-, Methylprednisone, 6alpha-Methylprednisone, 17,21-Dihydroxy-6alpha-methylpregna-1,4-diene-3,11,20-trione, Prednisone, 6alpha-methyl-, 6-alpha-methylprednisone, 6.alpha.-methylprednisone

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

Precautionary statements P264, P270, P301 + P317, P330, 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 Methylprednisolone 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 Methylprednisolone EP Impurity A

Which CAS number identifies Methylprednisolone EP Impurity A?
Methylprednisolone EP Impurity A is registered under CAS 91523-05-6. You may also see it listed as 6a-Methyl Prednisone, Methylprednisolone - Impurity A, 6-Methylprednisone. Our catalogue number for this item is ZX-022126.
What are the formula and molar mass of Methylprednisolone EP Impurity A?
For Methylprednisolone EP Impurity A, its formula is C22H28O5 and its molar mass is 372.5 g/mol. The systematic (IUPAC) name is (6S,8S,9S,10R,13S,14S,17R)-17-hydroxy-17-(2-hydroxyacetyl)-6,10,13-trimethyl-6,7,8,9,12,14,15,16-octahydrocyclopenta[a]phenanthrene-3,11-dione. InChIKey SVYCRJXQZUCUND-PQXSVQADSA-N lets you match it in any structure database.
How is Methylprednisolone EP Impurity A used in pharmaceutical QC?
Methylprednisolone EP Impurity A is a characterised reference material linked to Methylprednisolone. 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 Methylprednisolone 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 Methylprednisolone 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 Methylprednisolone EP Impurity A to my country?
Yes. Because Methylprednisolone 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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