Table 1.  List of withanolides from Withania somnifera.
Withaferin A   Withanolide A
PubChem CID: 265237  PubChem CID: 11294368
Molecular Formula: C28H38O6  Molecular Formula: C28H38O6
Chemical Class: Steroidal Lactone  Chemical Class: Steroidal Lactone
Withanolide B   Withanolide D
PubChem CID: 14236711  PubChem CID: 161671
Molecular Formula: C28H38O5  Molecular Formula: C28H38O6
Chemical Class: Steroidal Lactone  Chemical Class: Steroidal Lactone
Withanolide E   Withanone
PubChem CID: 301751  PubChem CID: 21679027
Molecular Formula: C28H38O7  Molecular Formula: C28H38O6
Chemical Class: Steroidal Lactone  Chemical Class: Steroidal Lactone
Viscosalactone B   Anaferine
PubChem CID: 57403080  PubChem CID: 443143
Molecular Formula: C28H40O7  Molecular Formula: C13H24N2O
Chemical Class: Steroidal Lactone  Chemical Class: Piperidine Alkaloid
 
Withasomnine   
PubChem CID: 442877   
Molecular Formula: C12H12N2   
Chemical Class: Pyrazole Alkaloid