(17Z)-20-Hydroxy-3,11-dioxopregna-1,4,17(20)-trien-21-al
- CAS
- 118724-35-9
- Formula
- C21H24O4
- MW
- 340.4 g/mol
ZX-026516
Pharmacopeial Impurities (EP / USP / BP)
Prednisone EP Impurity C
Reference StandardAvailable on request
Order Prednisone EP Impurity C (CAS 70522-55-3) online at Zemixal: C21H24O5, COA and SDS with every lot, worldwide shipping.
CAS number70522-55-3
FormulaC21H24O5
Molar mass356.4 g/mol
Physical formSolid
HS code38229090
InChIKeyZJGKMJHMOAPNRY-ZPOLXVRWSA-N
IUPAC name2-[(8S,9S,10R,13S,14S,17R)-17-hydroxy-10,13-dimethyl-3,11-dioxo-6,7,8,9,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoacetaldehyde
About Prednisone EP Impurity C
Prednisone EP Impurity C is supplied by Zemixal as a characterised reference material for Prednisone analysis. Key data (Reference Standard): CAS 70522-55-3, formula C21H24O5 and molar mass 356.4 g/mol. It is handled as a solid.
Where it is used
- Pharmacopeial method verification
- Impurity profiling
- QC release testing
- ANDA / DMF filings
Safe handling
Hazard communication follows GHS (Warning: H373). Our SDS lists exposure controls and first-aid measures.
Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Each lot travels with a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Reference standards for Prednisone
See every impurity, metabolite and related compound we list for this API.
Prednisone standardsTypical uses
- Pharmacopeial method verification
- Impurity profiling
- QC release testing
- ANDA / DMF filings
Applications
Grade guides
Specifications and identifiers
| Product name | Prednisone EP Impurity C |
|---|---|
| Catalogue number | ZX-031972 |
| CAS number | 70522-55-3 |
| IUPAC name | 2-[(8S,9S,10R,13S,14S,17R)-17-hydroxy-10,13-dimethyl-3,11-dioxo-6,7,8,9,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoacetaldehyde |
| Molecular formula | C21H24O5 |
| Molar mass | 356.4 g/mol |
| Exact mass | 356.1624 |
| Grade | Reference Standard |
| Physical form | Solid |
| XLogP3 | 1.8 |
| H-bond donors / acceptors | 1 / 5 |
| Topological polar surface area | 88.5 Ų |
| HS code | 38229090 |
| InChIKey | ZJGKMJHMOAPNRY-ZPOLXVRWSA-N |
| SMILES | C[C@]12CC(=O)[C@H]3[C@H]([C@@H]1CC[C@@]2(C(=O)C=O)O)CCC4=CC(=O)C=C[C@]34C |
| PubChem CID | 57369834 |
| Synonyms | Prednisone 21-Aldehyde, Prednisone - Impurity C, 17-Hydroxy-3,11,20-trioxopregna-1,4-dien-21-al, Prednisone-21-aldehyde, Pregna-1,4-dien-21-al, 17-hydroxy-3,11,20-trioxo-, Prednisone impurity C, Prednisolone Impurity 12 |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Warning
- H373May causes damage to organs through prolonged or repeated exposure
Precautionary statements P260, P319, 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
| 10 mg | Quoted on request | |
| 25 mg | Quoted on request | |
| 50 mg | Quoted on request | |
| 100 mg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about Prednisone EP Impurity C
Which CAS number identifies Prednisone EP Impurity C?
Prednisone EP Impurity C is registered under CAS 70522-55-3. You may also see it listed as Prednisone 21-Aldehyde, Prednisone - Impurity C, 17-Hydroxy-3,11,20-trioxopregna-1,4-dien-21-al. Our catalogue number for this item is ZX-031972.
What are the formula and molar mass of Prednisone EP Impurity C?
For Prednisone EP Impurity C, its formula is C21H24O5 and its molar mass is 356.4 g/mol. The systematic (IUPAC) name is 2-[(8S,9S,10R,13S,14S,17R)-17-hydroxy-10,13-dimethyl-3,11-dioxo-6,7,8,9,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoacetaldehyde. InChIKey ZJGKMJHMOAPNRY-ZPOLXVRWSA-N lets you match it in any structure database.
How is Prednisone EP Impurity C used in pharmaceutical QC?
Prednisone EP Impurity C is a characterised reference material linked to Prednisone. 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 Prednisone EP Impurity C?
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 Prednisone EP Impurity C?
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 Prednisone EP Impurity C to my country?
Yes. Because Prednisone EP Impurity C 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.
More Prednisone standards
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