BIFUNCTIONAL (20) HETEROBIFUNCTIONAL (34) Acrylates (ACRL) (6) Aldehydes (pALD, bALD) (7) Amines (NH2) (21) Biotins (BIO) (12) Carboxylic Acids (COOH, CM, ASA) (11) Epoxides (EPOX) (3) Esters (NHS, SAS, SC, SG, SS, SVA) (36) Hydrazides (HZ) (2) Hydroxyls (OH) (6) KITS (16) Maleimides (MAL) (10) MONOFUNCTIONAL (20) MULTI-ARMS (4 ARM) (12) Nitrophenyl Carbonates (NPC) (3) Orthopyridyl Disulfides (OPSS) (5) Phospholipids (DSPE) (5) Protected Amines (FMOC, tBOC) (10) Silanes (SIL) (4) Thiols (SH) (8) Valeric Acids (VA) (3)