The next reducing agent that we have to study is sodium triacetoxy borohydride. Sodium triacetoxy borohydride is also called sodium triacetoxy hydroborate. It's a reducing agent. It's a colorless salt. It's a colorless salt and it is prepared by protonalizes of sodium borohydride. So basically sodium borohydride is reacted with acetic acid and it undergoes protonalizes. And we obtain sodium triacetoxy borohydride and three molecules of hydrogen gas are evolved. It's a milder reducing agent. If we compare it with sodium borohydride or sodium sino borohydride. Compared to these two reducing agents, it's a milder reducing agent. It reduces all the endiheids but not all the ketones. It's sensitive to ethynol and water. So this cannot be used in a solvent solution of methanol or water. It gets very easily hydrolyzed so that's why it is not suitable to use solvent like methanol and water. It reacts slowly with methanol and isopropenol. So these two solvents can be used to carry out reduction reaction using stab. The main reaction that is carried out by using stab is reductive amination of aldehyde or ketones. So taking a general carbonite compound, if it is reacted within amine, stab is taken as reducing agent in presence of acetic acid, one equivalence and a solvent. Then reductive animated product is obtained. This kind of product is obtained on reductive amination of aldehyde and ketone. Next reducing agent is sodium sino borohydride. It's a colorless old. Again it is also used for the reductive amination of aldehyde and ketones, similar to that of the stab reducing agent. So reductive amination of aldehyde or ketone. This is the carbonite compound with amine along with this reagent. So sodium sino borohydride in presence of a solvent, here we are taking methanol and reductive aminated product is obtained. So this is obtained along with selectivity is achieved at a basic condition. That is pH 7 to 10 ke beechme, we get selectivity in reduction reaction. It is also used to convert amines to amines. It is tolerant to water, tolerant to equis condition, unlike stab. So it's a better reducing agent as compared to stabs since it can also give us reductive amination of aldehyde and ketone. It can be used in solvents like methanol and equis conditions. So these are the reducing agent that you were required to study.