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What is Retinol is a primary alcohol containing:- and explain in detail?
Retinol (vitamin A alcohol): 

lt is a primary alcohol containing beta-ionone ring. 
The side chain has two isoprenoid units, four double bonds and one hydroxyl group. 
Retinol is present in animal tissues as retinyl ester with long chain fatty acids

Key Concept:
Retinol is a vitamin A (alcohol containing beta-ionone ring)