(6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1′,2′:1,6]-pyrido[3,4-b]indole-1,4-dione ; CAS # 171596-29-5 ;

Desmethylene Tadalafil ; CAS # 171489-03-5 ;

(6R,12aR)-6-(Benzo[d][1,3]dioxol-2-one-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1′,2′:1,6]-pyrido[3,4-b]indole-1,4-dione ; CAS # 1346602-17-2 ;

Tadalafil (6R,12aS)-Isomer ; CAS # 171596-27-3 ;

N-Desmethyl epi-Tadalafil ; (6R,12aS)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro pyrazino [1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione ; CAS # 929100-66-3 ;

Tadalafil (6S,12aS)-Isomer ; L-Tadalafil ; L-Tildenafil ; CAS # 629652-72-8 ;

Tadalafil (6S,12aR)-Isomer ; CAS # 171596-28-4 ;

(6bR)-12-(1,3-Benzodioxol-5-yl)-12a-hydroxy-8-methyl-6a,6b,8,9,12,12a-hexahydropyrazino[1′,2′:1,2]-pyrrolo[3,4-c]quinoline-6,7,10(5H)-trione ; CAS # 951661-81-7 ;

(6R,12aR,12bR)-6-(1,3-Benzodioxol-5-yl)-6a-hydroxy-2-methyl-2,3,6a,7,12a,12b-hexahydropyrazino[1′,2′:1,5]-pyrrolo[3,4-b]quinoline-1,4,12(6H)-trione ;

(8a′R)-6′-(1,3-Benzodioxol-5-yl)-2′-methyl-2′,3′,8′,8a′-tetrahydro-6′H-spiro[3,1-benzoxazine-4,7′-pyrrolo[1,2a]pyrazine]-1′,2,4′(1H)-trione ;

(12bR)-6-(1,3-Benzodioxol-5-yl)-12-hydroxy-2-methyl-2,3,6,12b-tetrahydropyrazino[1′,2′:1,5]pyrrolo[3,4-b]quinoline-1,4-dione ; CAS # 531500-48-8 (S-isomer) ;

Tadalafil Ketolactam ; (6R,14aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,14,14a-tetrahydropyrazino[1,2-d][1,4]benzodiazonine-1,4,7,13(6H,8H)-tetrone ; CAS # 1346605-38-6 ;

(8a′R)-6′-(1,3-Benzodioxol-5-yl)-2′-methyl-2′,3′,8′,8a′-tetrahydro-6′H-spiro[indole-3,7′-pyrrolo[1,2-a]pyrazine]-1′,2,4′(1H)-trione ;

N-Desmethyl Tadalafil ; CAS # 171596-36-4 ;

(6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydropyrazino [1′,2′:1,6]-2-methyl-pyrido[3,4-b]indole-1,4-dione ; CAS # 385769-84-6 :