Aci-Dihydroergocryptine is a reference standard for the detection of HPLC standards. It is a natural product derived from plants and has been shown to have bioactive properties. The chemical structure of Aci-Dihydroergocryptine was elucidated by spectroscopic data, which showed that it is an aglycone with a dihydroergocryptine moiety. The purity of this compound is 99% and it has been isolated from the plant Acacia catechu L. (Benth).