Research Use Only 99%+ purity standard, HPLC-MS tested, and verified when available
Frequently Asked Questions About IGF-1 LR3 1mg IGF-1 LR3 differs from native IGF-1 (70 amino acids) through two modifications: a 13-amino acid N-terminal extension peptide and the substitution of glutamic acid at position 3 with arginine (Glu3 to Arg3, hence 'R3' in the name), resulting in an 83-amino acid protein with a molecular weight of 9,111 Da compared to native IGF-1's 7,649 Da
for longer storage, prepare aliquots and freeze
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Eur J Clin Nutr 68, 541548 (2014) doi:10.1038/ejcn.2014.46 Rogerson, David