Reference
Compare peptides
Two to four compounds, field by field: identity, United States regulatory status, and what kinds of documents are on file. The table records differences. It does not rank them.
Comparisons that resolve common confusion
- TB-500 · Thymosin beta-4
The seven-residue commercial fragment and the 43-residue parent protein are routinely described as one substance.
- Melanotan II · Bremelanotide
Near-identical mass and sequence. One has an FDA-approved product; the other does not.
- Afamelanotide · Melanotan II
Both circulate under the name “Melanotan”. They are different sequences with different regulatory status.
- Semaglutide · Tirzepatide · Retatrutide
Three incretin programmes at different regulatory stages.
- CJC-1295 · Sermorelin · Tesamorelin
GHRH analogues spanning unapproved, discontinued and approved status.
- Ipamorelin · GHRP-2
Growth-hormone secretagogues with their own FDA compounding entries.