Prompt

Illustration of the preparation process of galactose-conjugated chitosan (CS): showing CS and galactose dissolved in tetrahydrofuran, addition of boron trifluoride etherate under argon atmosphere, stirring at 60°C for 24 hours, concentration by rotary evaporator, addition into anhydrous methanol with stirring, dialysis in deionized water for 3 days, and final drying by rotary evaporator. Include chemical lab equipment like flasks, rotary evaporator, stirring apparatus, and dialysis setup, with a scientific and educational style.

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