Pangamic acid

Pangamic acid is an ester derived from gluconic acid and dimethylglycine. It was first isolated by Ernst T. Krebs from apricot kernels, and has since been identified in some foods such as pulses.

Pangamic acid is also known as vitamin B15, but it is not widely accepted as a vitamin because it has not been shown to be essential in the human diet, and a deficiency in consumption of pangamic acid is not associated with any disease.

The calcium salt of pangamic acid, calcium pangamate, is used as a mineral supplement.