Complimentary U.S. shipping on orders over $250
American-manufactured
Independently verified
Documentation on request
Reference Library
Compound comparisons.
High-intent, head-to-head reads on closely related research peptides, chemistry-first, for the bench.
Featured comparisonIncretins
03
Tirzepatide vs Retatrutide
The most-requested incretin matchup, read side by side. A dual GIP/GLP-1 receptor analog set beside a three-receptor, 39-residue sequence that adds glucagon-receptor activity, with sequence, structure, molecular weight, and reconstitution handling laid out for the bench.
Read the comparison →The Directory
7 more comparisonsHead to head.
01
BPC / TB SeriesBPC-157 vs TB-500The complementary cytoprotective pair, a 15-residue gastric fragment beside a thymosin beta-4 actin-binding sequence.Compare →
02GH-AxisIpamorelin vs CJC-1295Secretagogue vs GHRH analog, a pentapeptide beside a modified GHRH chain, often paired on the bench.Compare →
03IncretinsSemaglutide vs TirzepatideSingle vs dual incretin, a GLP-1 analog beside a GIP/GLP-1 dual-receptor sequence.Compare →
04GH-AxisCJC-1295 vs SermorelinStabilized vs native GHRH, a modified analog beside the GHRH (1-29) fragment.Compare →
05GH-AxisMK-677 vs IpamorelinOral mimetic vs peptide secretagogue, a non-peptide ibutamoren scaffold beside a pentapeptide.Compare →
06IGF FamilyIGF-1 LR3 vs IGF-1 DESThe binding-protein-escape variants, a Long-Arg3 83-residue analog beside a truncated des(1-3) form.Compare →
07MelanocortinPT-141 vs Melanotan-2The melanocortin pair, a cyclic 7-residue bremelanotide beside a cyclic lactam alpha-MSH analog.Compare →
Keep reading
Need the single-compound view first?
Read the per-compound research overviews for sequence, structure, and handling, or browse the full catalog to find the reference material behind every comparison.
