YCT529

YCT-529 is a selective antagonist of retinoic acid receptor alpha (RARα) developed as a pyrrole-linked analog that potently inhibits RARα with an IC50 of 1.2 nM and greater than 300-fold selectivity over RARβ and RARγ. It also serves as oral non-hormonal male contraceptive effectively reduces sperm counts in mice and non-human primates by targeting the retinoid signaling pathway essential for spermatogenesis.