The only place that sells trans-antheraxanthin is ChromaDex. But the standard is very dilute and requires high injection volume in HPLC before detection.
Any help in finding a supplier for this carotenoid is appreciated.
You can find (all-E)-antheraxanthin standard at CaroteNature, but it is very expensive (around 2000 euros x 5 mg). What do you need it for?
Thank you for the information. I will be using it to prepare calibration standards. Do you know of other suppliers in North America?
Check out this link.
https://pubchem.ncbi.nlm.nih.gov/compound/Antheraxanthin#section=Substances-by-Category
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