In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.

Q: Binding of antipsychotic drugs at alpha 1A- and alpha 1B-adrenoceptors: risperidone is selective for the alpha 1B-adrenoceptors.

A: risperidone
****
Q: Distinct role of PYK2 in mediating thromboxane generation downstream of both G12/13 and integrin αiibβ in platelets.

A: thromboxane
****
Q: Oxytocin receptor binding and uterotonic activity of carbetocin and its metabolites following enzymatic degradation.

A:
carbetocin
****