1H-thieno[3,4-d]imidazole-4-pentanamide, hexahydro-2-oxo-N-[2-[2-[2-[2-[[[[(2alpha,3alpha,5alpha,6E,22R,23R,24S)-2,3,22,23-tetrahydroxyergostan-6-ylidene]amino]oxy]methyl]-5-[3-(trifluoromethyl)-3H-di Biotin-BPCS Castasterone O-[2-[2-[2-(2-biotinylaminoethoxy)ethoxy]Ethoxy]-4-[3-(trifluoromethyl)-3H-diazirin-3-yl]]benzyloxime azirin-3-yl]phenoxy]ethoxy]ethoxy]ethyl]-, (3aS,4S,6aR)- biotin-tagged photoaffinity castasterone