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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 567391Generated: October 25, 2026

Potassium Hydroxide → Isotretinoin

https://huagongshe.com/reaction/567391

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium HydroxideHCID 14797—
Reactant1,4-Pentadien-3-ol, 3-methyl-1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-HCID 6436846—
ReactantTriphenylphosphinehydrochlorideHCID 12196763—
ReactantHydroxy butenolideHCID 21773091—
SolventEthanolHCID 702—
SolventWaterHCID 962—
ProductIsotretinoinHCID 5282379—

Reaction Steps

43 g of the mixture of retinoic acids from the condensation of hydroxy butenolide, vinyl beta-ionol and triphenylphosphine hydrochloride in 10 ml of ethanol are treated with 15 g of a 50% potassium hydroxide aqueous solution, subsequently diluted to 200 mL with water, added with 30 mg of Bengal rose, then irradiated with a 18 Watt lamp for 12 hours.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06177579B1
Source datasetuspto-grants-2001_01
ORD IDord-53c33f094f89499a89ea20c9541d821d
Source noteuspto-grants-2001_01