Biotin-X succinimidyl ester (6-((Biotinoyl)amino)hexanoic acid succinimidyl ester) is readily coupled to a primary or secondary amine under mild conditions. <ul> <li>White solid soluble in DMSO and moderately soluble in DMF</li> <li>Store at -20°C</li> <li>C₂₀H₃₀N₄O₆S</li> <li>MW: 454.54</li> <li>[72040-63-2]</li> </ul>