Last reviewed: October 2026 · Cleared Peptides research team
Pterostilbene is a stilbene, CAS 537-42-8, formula C16H16O3. The public record names the trans isomer as 4-[(E)-2-(3,5-dimethoxyphenyl)ethenyl]phenol. It is the 3,5-dimethyl ether of resveratrol: two methoxy groups replace two of resveratrol’s hydroxy groups. Powder means the solid research material.
| Name | Pterostilbene |
|---|---|
| Other names | trans-pterostilbene; 3,5-dimethoxy-4′-hydroxy-trans-stilbene |
| CAS number | 537-42-8 |
| PubChem CID | 5281727 |
| Molecular formula | C16H16O3 |
| Class | Stilbene. Not a peptide. |
| Catalog status | Not a current Cleared Peptides lot. |
Structural note
The comparison with resveratrol is structural. This page does not restate cell-assay outcomes as benefits. Identity is the CAS number and the trans-stilbene substitution pattern.
Frequently Asked Questions
Is pterostilbene a peptide?
No. It is a small-molecule stilbene.
Which isomer is named?
The public record used here is the trans isomer, CAS 537-42-8.
Is this for human use?
No. Laboratory reference only.
Selected References
Registry records and peer-reviewed literature listed as scientific background. Citation does not imply endorsement, a benefit, or any use.
- PubChem CID 5281727, CAS 537-42-8. PubChem 5281727
Research Use Only Notice
This guide is provided for educational and laboratory reference purposes. It summarizes published structural and biochemical literature. It does not describe, recommend, or imply any use in humans or animals. These materials are not drugs, foods, cosmetics, or dietary supplements on this page, are not offered here as a treatment, and no dosing or administration instructions are provided. Cleared Peptides does not currently list a lot for every compound on this page.
