IGF-1 LR3 is a long arginine 3 IGF-1, a recombinant IGF-1 analog with an N-terminal extension and Arg3 substitution. With the molecular formula C₄₀₀H₆₂₅N₁₁₁O₁₁₅S₆ and a molecular weight of 9111.6 g/mol (CAS: 143045-27-6), it structurally mimics endogenous peptides while extending its sequence.
MFPAMPLSSLFVNGPRTLCGAELVDALQFVCGDRGFYFNKPTGYGSSSRRAPQTGIVDECCFRSCDLRRLEMYCAPLKPAKSARSVRAQRHTDMPKTQKYQPPSTNKNTKSQRRKGSTFEEHK


