A series of new 1,3-dimethyl-7-phenylalkyl-8-[3-(4-phenyl-1-piperazinyl)propylamino]-purine-2,6-dione derivatives (10-16) was synthesized and their 5-HTIA and 5-HT2A receptor affinities were determined. It was found that compounds with the phenylpropyl substituent in position 7 of purine-2,6-dione (12, 14 and 16), or with phenylmethyl in position 7 and 2-OCH3 in the phenylpiperazine part (13) s...

The photogeneration of 2,3,9,10-tetrabromopentacene from its precursor dione by photodecarbonylation was investigated. An unusual photodimer, 3,3',9,9',10,10'-hexabromo-2,2'-bipentacene, is produced.

1. Unsubstituted 6-membered aromatic ring systems (fused, unfused, or mixed) chrysene mutagenic initiator carcinogenic pyrene co-carcinogen mutagenic benzo[a]pyrene mutagenic carcinogenic fetotoxic teratogenic benzo[e]pyrene carcinogenic mutagenic benzo[a]anthracene mutagenic carcinogenic benzo[c]phenanthrene initiator mutagenic naphthalene inhibitor phenanthrene initiator mutagenic anthracene ...

We have used equations for partition coefficients of compounds from water and the gas phase to various solvents to obtain descriptors for pentane-2,4-dione and 21 of its derivatives. These descriptors can then be used to estimate further partition coefficients into a wide variety of solvents. The descriptors also yield information about the properties of pentane-2,4-dione and its derivatives. P...

In the title compound, C(33)H(25)F(2)NO(2), the acenaphthene ring system forms dihedral angles of 50.93 (14) and 36.89 (14)° with the benzene rings. The pyrrolidine and cyclo-penta-none rings adopt envelope (with the N atom as the flap) and twisted conformations, respectively. In the crystal, C-H⋯O and C-H⋯F inter-actions link the mol-ecules.

The health implication of PAHs has been great concern due to its contamination the food chain. This study was carried out identify challenges associated with bioaccumulation in Fluted Pumpkin (Telfairia occidentalis) and Waterleaf (Talinum fruticosum) along Imo River Watershed, State, Nigeria. A total 8 soil samples (0-30cm) were randomly collected from different activity areas on watershed ana...