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What is the ratio of E/Z isomers present in the mixture? What are the impurities?
Asked on Feb 10 2016
This compound is packaged as a water-dispersable solid in a gelatin base; it has > 1% BHA,BHT, & α-Tocopherol added as preservatives. The lab didn't have exact impurity information available. Retinyl palmitate is not as stable as retinyl acetate in pure form. 250,000 USP units per gram. Also, the product is the E form - this is the stable isomer.
I hope this information helps. Again I'm very sorry for the delay. If you have any other questions, please let me know.
Elena Valued CustomerAbcam Scientific Support
Answered on Feb 10 2016