tert-Butyl (3-(5-aminonaphthalen-1-yl)propyl)carbamate is a protected amine building block featuring a Boc (tert-butoxycarbonyl) group on the aliphatic propyl amine and a free primary aromatic amine on the naphthalene ring. The Boc protection enables selective reactions at the aromatic amine during multi-step organic synthesis, particularly for pharmaceuticals, agrochemicals, and drug discovery. The naphthalene core provides fluorescence properties, valuable for fluorescent probes, dyes, and biological imaging applications. Its bifunctional amine structure supports targeting specific enzymes or receptors.