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The chemical with CAS number 201856-53-3 is identified as a crucial Paclitaxel side chain, specifically known as (3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)-4-phenyl-2-azetidinone. It is a key intermediate used in the semi-synthesis of Paclitaxel, a high-value anti-cancer drug.
Key Details for 201856-53-3:
- Description: Paclitaxel side chain; (3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)-4-phenyl-2-azetidinone.
- Role: Used as an intermediate for producing semi-synthetic Taxol® (Paclitaxel).
- Purity: Typically available at purity by HPLC.
- Appearance: White to off-white powder.
- Storage: Requires storage in a cool, dry place, often under inert gas.
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Web results
Paclitaxel side chains cas 201856-53-3 - Crene Biotechnology
pharm-intermediates.com
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Chemical Name: (3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)-4-phenyl-2-azetidinone. Properties: Density: 1.22. Boiling Point: 464.832ºC at 760 mmHg.Read more
Paclitaxel side chain/ (3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)
china-sinoway.com
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Paclitaxel side chain/ (3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)-4-phenyl-2-azetidinone 201856-53-3. 98% up by HPLC. Inquire now. Product categories.Read more
Pharmaceutical Intermediates | Amikacin - Sinoway
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201856-53-3. Paclitaxel side chain/ (3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)-4-phenyl-2-azetidinone 201856-53-3 · NIFURATEL impurity. 1-Hydrazino-3-(methylthio) ...Read more
Chemical Intermediates
jigspharma.com
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jigspharma.com
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Usage:Used as a key intermediate in organic and medicinal chemistry. Know More. CAS number: 316173-28-1. Properties : Molecular Formula. C17H28N2O5. Molecular ...Read more
Carbomer, Inc.
ChemBuyersGuide.com
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The company manufactures research and diagnostic products, bulk intermediates, pharmaceutical actives, excipients and intermediates, cosmetic ingredients and ...Read more
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Web results
The Paclitaxel Biosynthesis Pathway Unlocked - PMC - NIH
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC12538117
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC12538117
by L Martinelli2025 — Abstract. Paclitaxel, a natural product produced by yew trees, has become an important drug in the fight against cancer.Read more
Pharmaceuticals (API) 2 – 10 Intermediates 11 – 25 Amino ...
Tradekey
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Tradekey
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201856-53-3. 1-(3-Methoxyphenyl)piperazine dihydrochloride. 6968-76-9. (3R,4S)-tert-Butyl 2-oxo-4-phenyl-3-. (triethylsilyloxy)azetidine-1-carboxylate. 149198- ...Read more
Paclitaxel, Semi-Synthetic
Sigma-Aldrich
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Sigma-Aldrich
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A semi-synthetic form of Paclitaxel having no contamination by natural taxanes. Also has reduced levels of epimerization products as contaminants. No rating ...Read more
$122.00In stock$26.19 delivery
Missing: intermediate 201856-53-3
INTERMEDIATE Suppliers,INTERMEDIATE Price - Sinoway
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... 201856-53-3. 98% up by HPLC. Tags : 201856-53-3 paclitaxel side chain 33069-62-4 azelidinone paclitaxel paclitaxel intermediate · read more · 147511-70-4.Read more
(R)-O-Acetylmandelic Acid Chloride - JIGS Chemical Limited
jigspharma.com
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(R)-O-Acetylmandelic acid chloride is a highly reactive organic intermediate widely utilized in the pharmaceutical industry and organic synthesis. This clear to ...Read more