Peptide
Epithalon
- CAS
- 307297-39-8
- Formula
- C14H22N4O9
- Catalog mass
- 390.35 Da
- Sequence avg
- 390.35 Da
- Monoisotopic
- 390.1387 Da
- Sequence
- Ala-Glu-Asp-Gly
Expected ions
[M+H]+
391.146
[M+2H]2+
196.0766
[M+3H]3+
131.0535
Often confused with
Peptide identity index
The peptide identity index tells you whether two names used for research peptides refer to the same molecule. Look up a catalog name, a CAS number, or an alias. Compare a second name when a vial, a paper, or a COA uses a different label.
Mass values computed from sequence are for checking an HPLC-MS report. This page does not calculate reconstitution volumes or human doses. Pair it with a lot-linked Certificate of Analysis and the 12-point COA audit.
Epithalon
307297-39-8
Pinealon
175175-23-2
Not the same molecule
EDR versus AEDG. Short Khavinson peptides, not the same residue set.
View specs
Peptide
Pinealon
- CAS
- 175175-23-2
- Formula
- C14H22N4O9
- Catalog mass
- 389.39 Da
- Sequence avg
- 418.41 Da
- Monoisotopic
- 418.1812 Da
- Sequence
- Glu-Asp-Arg
- Sequence average (418.41 Da) differs from the catalog mass (389.39 Da). Read the lot COA for the figure that lot used.
Expected ions
[M+H]+
419.1885
[M+2H]2+
210.0979
[M+3H]3+
140.401
Presentations
Often confused with
How the index decides
Catalog CAS, formula, and sequence come from Tetrava lot identity tables. Monoisotopic mass and expected ions are calculated only when the sequence parses as standard residues plus common caps (acetyl, amide, Aib, Nle, pGlu). Heavily modified GLP-1 analogs stay as catalog text.
TB-500 is the main trap. Supplier tables often reuse the CAS and 4,963 Da mass of full-length thymosin beta-4 on a vial whose sequence is Ac-LKKTETQ. This index splits those identities on purpose.
Research use only. Not for human or veterinary consumption.