alnespirone [ 4-(N-(5-methoxychroman-3-yl)-N-propylamino)butyl-8-azaspiro(4,5)decane-7,9-dione,4-N-(5-methoxychromane-3-yl) N-propylaminobutyl-8-azapiro 4,5-decane-7,9-dione hydrochloride,8-(4-(N-(5-methoxychroman-3-yl)-N-propyl)aminobutyl)-8-azaspiro(4,5)decane-7,9-dione,S 20244,S 20244, (+)-hydrochloride,S 20244, (-)-hydrochloride,S 20499,S 20500,S-20244,S-20499,S-20500,S20244 ] S 20499 is the (+)-enantiomer; S 20500 is the (-)-enantiomer