1-Dehydro-11α,16α-dihydroxycortexolone (CAS 34647-56-8), also listed as Prednisolone Impurity 45 / 16α-Hydroxyprednisolone, is supplied by Monuo Chemical for specialty chemical and custom synthesis purchasing. Buyers typically search by impurity name, steroid synonym or CAS when sourcing a defined prednisolone-related reference intermediate for analytical and process R&D.
Key Specifications at a Glance
| Product Name | 1-Dehydro-11α,16α-dihydroxycortexolone (Prednisolone Impurity 45) |
|---|---|
| CAS Number | 34647-56-8 |
| Molecular Formula | C21H28O6 |
| Molecular Weight | 376.44 g/mol |
| Chemical Class | Corticosteroid-related steroid / analytical impurity intermediate |
| Purity / Specification | 98% (confirm assay on the batch COA) |
| Typical Use Area | Analytical reference; impurity tracking; steroid process R&D |
| Category | Custom synthesis |
| Documents | COA, TDS, SDS on request |
| Supply Origin | China | Worldwide shipping |
What Is 1-Dehydro-11α,16α-dihydroxycortexolone?
1-Dehydro-11α,16α-dihydroxycortexolone (CAS 34647-56-8) is a prednisolone-related steroid often catalogued as Prednisolone Impurity 45 and as 16α-Hydroxyprednisolone / 11α,16α-hydroxyprednisolone. Molecular formula C21H28O6; molecular weight about 376.44 g/mol. Always match CAS 34647-56-8 on the batch COA.
Supplier and pharmaceutical-impurity literature describe it as a reference / impurity material for prednisolone analytical method development, QC tracking and related steroid process work. It is also discussed in literature as a 16α-hydroxyprednisolone species associated with budesonide metabolite studies. Monuo Chemical supplies this material as a specialty chemical raw material under Custom synthesis, with batch identity documentation (COA / SDS). It is not supplied as a finished drug substance. Finished-product claims, labeling and local regulatory filings remain the customer’s responsibility. Confirm stereochemistry and assay against the batch COA for your intended method.
Synonyms & Search Names
- 1-Dehydro-11α,16α-dihydroxycortexolone
- Prednisolone Impurity 45
- 16α-Hydroxyprednisolone
- 11α,16α-Hydroxyprednisolone
- (8S,9S,10R,11R,13S,14S,16R,17S)-11,16,17-Trihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one
- CAS 34647-56-8
Applications
In specialty chemical and custom synthesis projects, this steroid impurity intermediate is commonly reviewed for:
- Prednisolone impurity / related-substance analytical reference supply
- Method development, validation support and QC tracking for corticosteroid projects
- Steroid process R&D where a defined 16α-hydroxyprednisolone species is required
- Catalog purchasing of CAS-matched corticosteroid intermediates for laboratory use
Compare related specialty items such as 1,3-Diacetyl-2-imidazolidinone (CAS 5391-40-2) in the same Custom synthesis range.
Handling & Use Notes
- Identity check: Confirm CAS 34647-56-8, impurity designation and assay on the batch COA before use.
- Storage: Steroid reference materials are often light- and temperature-sensitive; keep sealed and follow the batch COA / SDS (cold storage may be required).
- Process fit: Verify solubility and chromatographic behavior for your intended analytical or synthesis method.
- Safety: Follow the SDS for storage, PPE and waste handling. Use the batch SDS as the controlling safety document.
Need assay or packing discussion? Email [email protected] or use the contact form.
Packaging, Storage & Logistics
| Standard Pack Sizes | 50 g / 100 g bottles; 500 g / 1 kg packs (custom packing available) |
|---|---|
| Storage | Keep sealed, dry and protected from light and heat; follow cold-storage guidance on the batch COA and SDS |
| Shelf Life | Confirm shelf life on the COA for each lot |
| MOQ | Commercial MOQ discussed per project (often from 50 g); larger packs available on request |
| Lead Time | Stock items often ship promptly; custom pack / large lots typically 7–14 working days |
Quality & Documentation
For 1-Dehydro-11α,16α-dihydroxycortexolone (CAS 34647-56-8), Monuo Chemical can provide:
- Certificate of Analysis (COA)
- Technical Data Sheet (TDS) and Safety Data Sheet (SDS)
- CAS / product-name confirmation for your purchase file
- Flexible packing from grams to kilograms
- FOB / CIF / DAP terms as agreed
Our team aims to return technical data and quotations within 24 hours. See also Custom synthesis.
Request a Quote
Share your target assay, pack size and destination. We will confirm availability and documentation for Prednisolone Impurity 45 CAS 34647-56-8.
Request a Quote | Email: [email protected]
Frequently Asked Questions
What is CAS 34647-56-8?
It is 1-Dehydro-11α,16α-dihydroxycortexolone, commonly listed as Prednisolone Impurity 45 / 16α-Hydroxyprednisolone. Monuo Chemical lists it under Custom synthesis. Match CAS 34647-56-8 on the batch COA.
Is this finished prednisolone API?
No. It is a related steroid impurity / intermediate for analytical and process R&D—not finished prednisolone API. Confirm the correct CAS on your RFQ.
Where is it typically used?
Typical uses include impurity reference supply, method development / QC tracking for prednisolone projects, and related steroid process work. Finished-product claims remain the customer’s responsibility.
What is the molecular formula and weight?
Molecular formula C21H28O6; molecular weight about 376.44 g/mol. Confirm on the batch COA/TDS.
What specification do you supply?
Catalog listing notes 98%; exact assay is confirmed on the Certificate of Analysis for each lot. Share your target specification when you request a quote.
How should the material be stored?
Keep sealed, dry and protected from light; follow any cold-storage guidance on the batch COA and SDS.
How do I request a quotation for CAS 34647-56-8?
Share target assay, pack size and destination via the Request a Quote page or email [email protected]. We aim to reply within 24 hours.
Which related Custom synthesis products can I review?
You may also review 1,3-Diacetyl-2-imidazolidinone (CAS 5391-40-2) and 5-Vinylpyrrolidone (5-VP) (CAS 7529-16-0), or open the full Custom synthesis catalog.
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- View all Custom synthesis
Disclaimer: Information is for specialty chemical raw-material identification and technical reference. This material is supplied for research / analytical / process-development use as described on the COA—not as finished drug substance. Finished-product claims and regulatory filings remain the customer’s responsibility. Verify each lot against the supplied COA and SDS. Trade terms are FOB / CIF / DAP as agreed.
