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For inclusion of NNAL into a polymer matrix. Kit Contents:Vial 1: 0.5g 4-(N-Methyl)-1-(3-pyridyl)-1-butanol Vial 2: 0.5g Propionaldehyde Vial 3: 3g dried molecular sieves. (This experiment should be conducted by a trained chemist) Directions: In an efficient fume hood, add the contents of Vial 2 (anhydrous Toluene can be used to ensure complete trans fer of the liquid) and Vial 3 to Vial 1. Dilute with 15mL of anhydrous Toluene and reseal tightly. Shake or stir at 50-60掳C in the hood for 3 hours. After cooling the mixture is ready for use as is or after filtration to remove sieves. Gives approximately 100-200mg of final product if done correctly.