BPC-157 vs TB-500
BPC-157 is a 15-residue peptide with free ends, while TB-500 is a 7-residue fragment with an acetylated N-terminus, and the two share no sequence.
TB-500 has no stand-alone record in our library, so its figures here come from the TB-500 component of the BPC-157 + TB-500 blend record.
Structure side by side
| Property | BPC-157 | TB-500 |
|---|---|---|
| Type | Synthetic peptide (pentadecapeptide) | N-acetylated heptapeptide fragment |
| Residues | 15 | 7 |
| Sequence | GEPPPGKPADDAGLV | Ac-LKKTETQ |
| Molecular weight | 1,419.5 g/mol | 889.0 g/mol |
| Molecular formula | C62H98N16O22 | C38H68N10O14 |
| CAS number | 137525-51-0 | 885340-08-9 |
| Modification | Free N- and C-termini; commonly supplied as an acetate or TFA salt. | N-terminal acetylation (the Ac- at the start of the sequence) |
| Form we sell | Lyophilized powder | Lyophilized powder |
| Storage, sealed powder | -20°C; ~24 months desiccated and protected from light. | Keep sealed, dry, and protected from light; general synthetic-peptide handling guidance recommends storage at −20 °C or colder. |
| References | 35 cited in the record | 19, cited in the BPC-157 + TB-500 blend record |
Records and products
Questions
What is the structural difference between BPC-157 and TB-500?
BPC-157 is a 15-residue peptide with free ends, while TB-500 is a 7-residue fragment with an acetylated N-terminus, and the two share no sequence. TB-500 has no stand-alone record in our library, so its figures here come from the TB-500 component of the BPC-157 + TB-500 blend record.
How are BPC-157 and TB-500 stored as sealed powder?
BPC-157: -20°C; ~24 months desiccated and protected from light. TB-500: Keep sealed, dry, and protected from light; general synthetic-peptide handling guidance recommends storage at −20 °C or colder.
How is the identity of BPC-157 and TB-500 confirmed?
By mass spectrometry: the measured mass is compared with the expected molecular weight, 1,419.5 g/mol for BPC-157 and 889.0 g/mol for TB-500. Purity is measured separately by HPLC, and every lot we sell has its certificate at luvaminos.com/coa.
Other comparisons