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Pharmacopeial Impurities (EP / USP / BP)

Clobetasol Propionate EP Impurity K

Reference StandardAvailable on request

Clobetasol Propionate EP Impurity K (CAS 75883-07-7) supplier Zemixal. Request a quote with price, lead time and documents.

Pack sizes
Clobetasol Propionate EP Impurity K chemical structure
CAS number75883-07-7
FormulaC25H33FO6
Molar mass448.5 g/mol
Physical formSolid
HS code38229090
InChIKeyALINSFFSOAHJII-XGQKBEPLSA-N
IUPAC name[2-[(8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] propanoate

About Clobetasol Propionate EP Impurity K

Clobetasol Propionate EP Impurity K belongs to the Betamethasone reference-standard family in the Zemixal catalogue. Identity at a glance (Reference Standard): CAS 75883-07-7, formula C25H33FO6 and molar mass 448.5 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 Danger (H361 and H373), so wear gloves and eye protection and work with good ventilation.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. 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 Betamethasone

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

Betamethasone 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 Clobetasol Propionate EP Impurity K
Product nameClobetasol Propionate EP Impurity K
Catalogue numberZX-019987
CAS number75883-07-7
IUPAC name[2-[(8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] propanoate
Molecular formulaC25H33FO6
Molar mass448.5 g/mol
Exact mass448.2261
GradeReference Standard
Physical formSolid
XLogP33.1
H-bond donors / acceptors2 / 7
Topological polar surface area101 Ų
HS code38229090
InChIKeyALINSFFSOAHJII-XGQKBEPLSA-N
SMILESCCC(=O)OCC(=O)[C@]1([C@H](C[C@@H]2[C@@]1(C[C@@H]([C@]3([C@H]2CCC4=CC(=O)C=C[C@@]43C)F)O)C)C)O
PubChem CID9981101
SynonymsBetamethasone-21-Propionate, Betamethasone Dipropionate - Impurity C, Betamethasone Dipropionate EP Impurity C, Clobetasol Propionate - Impurity K, Betamethasone 21-Propionate, 9-Fluoro-11beta,17-dihydroxy-16beta-methyl-3,20-dioxopregna-1,4-dien-21-yl propanoate, (11b,16b)-9-fluoro-11,17-dihydroxy-16-methyl-21-(1-oxopropoxy)pregna-1,4-diene-3,20-dione

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS08 Health hazard
Health hazard

Signal word Danger

  • H361Suspected of damaging fertility or the unborn child
  • H373May causes damage to organs through prolonged or repeated exposure

Precautionary statements P203, P260, P280, P318, P319, 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 Clobetasol Propionate EP Impurity K
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 Clobetasol Propionate EP Impurity K

Which CAS number identifies Clobetasol Propionate EP Impurity K?
Clobetasol Propionate EP Impurity K is registered under CAS 75883-07-7. You may also see it listed as Betamethasone-21-Propionate, Betamethasone Dipropionate - Impurity C, Betamethasone Dipropionate EP Impurity C. Our catalogue number for this item is ZX-019987.
What are the formula and molar mass of Clobetasol Propionate EP Impurity K?
For Clobetasol Propionate EP Impurity K, its formula is C25H33FO6 and its molar mass is 448.5 g/mol. InChIKey ALINSFFSOAHJII-XGQKBEPLSA-N lets you match it in any structure database.
How is Clobetasol Propionate EP Impurity K used in pharmaceutical QC?
Clobetasol Propionate EP Impurity K is a characterised reference material linked to Betamethasone. 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 Clobetasol Propionate EP Impurity K?
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 Clobetasol Propionate EP Impurity K?
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 Clobetasol Propionate EP Impurity K to my country?
Yes. Because Clobetasol Propionate EP Impurity K 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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