7, 9-Dideacetylbaccatin VI

7, 9-Dihydro-1, 3, 7-trimethyl-9-(2-propen-1-yl)-1H-purine-2, 6, 8(3H)-trione

7, 9-Dihydro-1, 3, 9-trimethyl-1H-purine-2, 6, 8(3H)-trione

7, 9-Dihydro-1, 3-dimethyl-1H-purine-2, 6, 8(3H)-trithione

7, 9-Dihydro-1, 9-dimethyl-1H-purine-2, 6, 8(3H)-trione

7, 9-Dihydro-3, 7, 9-trimethyl-1H-purine-2, 6, 8(3H)-trione

7, 9-Dihydro-3, 9-dimethyl-1H-purine-2, 6, 8(3H)-trione

7, 9-Dihydro-7, 9-dimethyl-1H-purine-2, 6, 8(3H)-trione

7, 9-Dihydroxy-1, 2, 3, 4, 4a, 5, 6, 10b-octahydrobenzo(f)quinoline

7, 9-Dihydroxymethylbenz(c)acridine phenol

7, 9-Dimethyl-dibenz(b, f)(1, 4)oxazepin-11-(10H)-one

7, 9-Dimethylbenz(c)acridine

7, 9-Dimethylbenz(c)acridine phenol

7, 9-Dimethylbenz(c)acridine-5, 6-oxide

7, 9-Dimethylguanine

7, 9-Dimethylspiro(5.5)undeca-1, 8-dien-3-one

7, 9-Dimethylthieno(3'', 2'':5', 6')pyrido(4', 3':3, 4)pyrazolo(1, 5-a)pyrimidine

7, 9-Dimethyltricyclo(5.4.0.03, 9)undecan-8-ol

7, 9-Dimethylxanthine betaine

7, 9-Dithia-4, 12-diaza-8-germapentadecane-1, 15-diamine, 8, 8-bis(4, 5-dihydro-2-(1-naphthalenylmethyl)-1H-imidazol-1-yl)-, hexahydrochloride