Aprepitant (CAS-170729-80-3) in bulk form. The subject product, Aprepitant, is a selective high-affinity antagonist of human substance P/neurokinin 1 (NK1) receptors. It is indicated for the prevention of acute and delayed nausea and vomiting caused by cancer chemotherapy treatment. It is also indicated for the prevention of postoperative nausea and vomiting. You stated in your letter that it will be imported in 100 grams.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N149876