The molecular identity of BPC-157 begins with its amino-acid sequence.
GEPPPGKPADDAGLV
This sequence contains 15 residues and therefore defines BPC-157 as a pentadecapeptide.
BPC-157 Sequence Table
| Position | Residue |
|---|---|
| 1 | Glycine |
| 2 | Glutamic acid |
| 3 | Proline |
| 4 | Proline |
| 5 | Proline |
| 6 | Glycine |
| 7 | Lysine |
| 8 | Proline |
| 9 | Alanine |
| 10 | Aspartic acid |
| 11 | Aspartic acid |
| 12 | Alanine |
| 13 | Glycine |
| 14 | Leucine |
| 15 | Valine |
PubChem’s condensed representation is:
H-Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val-OH.
BPC-157 Molecular Formula
For the free peptide representation, PubChem reports:
C62H98N16O22
This molecular formula describes the elemental composition represented in that database record.
BPC-157 Molecular Weight
PubChem reports:
1419.5 g/mol
with a calculated monoisotopic mass of approximately 1418.704 Da.
Why Sequence Matters More Than the Product Name
Peptide names are convenient labels.
Sequence information gives researchers a defined molecular target.
When analyzing a synthetic peptide, researchers may compare observed molecular data against expectations derived from:
sequence, chemical modifications, salt form and other material characteristics.
This is why a technically strong BPC-157 page should publish the sequence rather than simply state “BPC-157 10 mg.”
BPC-157 Free Peptide vs. TFA-Associated Material
PubChem currently maintains a separate BPC-157 TFA salt record.
The TFA-associated representation retains the BPC-157 sequence but reports a formula of:
C66H100F6N16O26
and molecular weight approximately:
1647.6 g/mol.
The difference illustrates why researchers should not assume that every material labeled BPC-157 will have the same reported total molecular mass without first determining the chemical form represented.
Why Material Form Matters for Analytical Interpretation
Chemical form can affect:
chromatographic behavior, calculated mass, ionization behavior, sample preparation and interpretation of analytical results.
Therefore, when Nexigen publishes a molecular weight on the product page, that value should correspond to the actual form documented for the current material.
BPC-157 Identifiers
| Identifier | Value |
|---|---|
| PubChem CID | 9941957 |
| CAS | 137525-51-0 |
| Sequence | GEPPPGKPADDAGLV |
| Formula | C62H98N16O22 |
| Approx. MW | 1419.5 g/mol |
| InChIKey | HEEWEZGQMLZMFE-RKGINYAYSA-N |
