TSHR antagonist S37b, the less potent enantiomer of TSHR antagonist S37a, exhibits minimal efficacy in inhibiting the thyrotropin receptor (TSHR). It is utilized in thyroid function research[1].
PGlu-3-methyl-His-Pro-NH2 TFA enhances binding to pituitary TRH receptors, thereby increasing the stimulation of thyroid-stimulating hormone (TSH) release from the pituitary.