1 VHH 5-[(3as,4s,6ar)-1,3-dimethyl-2-oxohexahydro-1h-thieno[3,4-D]imidazol-4-yl]pentanoic acid 1.000 2 BTN Biotin 0.889 3 BTQ Epi-biotin 0.889 4 NVZ 5-[(3as,4s,6ar)-1-acetyl-2-oxohexahydro-1h-thieno[3,4-D]imidazol-4-yl]pentanoic acid 0.850 5 BSO Biotin-D-sulfoxide 0.842 6 BTI 5-(hexahydro-2-oxo-1h-thieno[3,4-D]imidazol-6-yl)pentanal 0.833 7 BYY 5-[(3as,4s,6ar)-2-oxohexahydro-1h-selenopheno[3,4-D]imidazol-4-yl]pentanoic acid 0.789 8 IMI 2-iminobiotin 0.789 9 BC4 (3as,4s,6ar)-4-(hex-5-yn-1-yl)tetrahydro-1h-thieno[3,4-D]imidazol-2(3h)-one 0.737