pipecholic acid

Контекст:

It has now been found that if high levels of fibroblast growth factor, gamma amino butyric acid, pipecholic acid, lithium and transforming growth factor beta are added to the medium in which the stem cells are
cultured, the stem cells will remain undifferentiated indefinitely through multiple passages, even without feeder cells or conditioned medium.

что-то я такой холевой кислоты нигде не встречала..:((

Заранее спасибо!