NHS-LC-Biotin, Succinimidyl 6-(biotinamido)hexanoate, is an amino-reactive biotinylation reagent with a long spacer arm. The 6-atom spacer arm of NHS-LC-Biotin provides distance between the biotin and the target ligand which helps alleviate steric hindrance. NHS-LC-Biotin is used to biotinylate proteins, peptides, or amino acids by reacting with primary amines as found in the N-terminus and Lysine side chains. The NHS-LC-Biotin molecule is cell membrane permeable and can be used to label intracellular proteins; whereas Sulfo-NHS-LC-Biotin is designed to biotinylate extracellular proteins. The resulting biotinylated protein can then be detected when used in conjunction with streptavidin and Immobilized Streptavidin.

Molecular Weight: 454.54

Spacer Length: 22.4 Å

CAS Number: 72040-63-2 (Alternative CAS 1219212-66-4 Biotin-X-NHS)

Chemical Formula: C20H30N4O6S

Alternative Names: Biotin-X-NHS; (+)-Biotinamidocaproate N-hydroxysuccinimidyl ester; Biotinamidocaproate N-hydroxysuccinimidyl ester; succinimidyl biotinamido hexanoate; NHS LC Biotin; succinimidyl biotinamidyl hexanoate; succinimidyl biotinamido hexanoate; long chain NHS Biotin