| 9h-purine, 2-((4-butylphenyl)amino)-6-chloro-9-(2-deoxy-beta-d-erythro-pentofur |
| anosyl )- |
| 2-((4-butylphenyl)amino)-6-chloro-9-(2-deoxy-beta-d-erythro-pentofuranos yl)- |
| 9h-purine |
| 2-(p-n-butylanilino)-6-chloro-9-(2-deoxy-beta-d-ribofuranosyl)purine |
| 2-((4-butylphenyl)amino)-6-chloro-9-(2-deoxy-beta-d-erythro-pentofuranosyl )-9h-purin |
