(-)-Praeruptorin B is a natural product from Peucedanum praeruptorum Dunn.

In current study, a rapid and reliable online solid phase extraction-chiral high performance liquid chromatography-tandem mass spectrometry (online SPE-chiral LC-MS/MS) method was developed for the simultaneously enantiospecific quantitation of (+)-trans-khellactone (dTK), (+/-)-cis-khellactone (d/lCK), (+/-)-praeruptorin A (d/lPA), (+)-praeruptorin B/(-)-Praeruptorin B (d/lPB) and (+)-praeruptorin E (dPE), the main active angular-type pyranocoumarins (APs) in Peucedani Radix (Chinese name: Qian-hu) or the major metabolites of those APs, in rat plasma.

4970-26-7

C24H26O7

426.46

(-)-白花前胡乙素;(-)-Praeruptorin B

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years