2]ArX complex, is usually accepted as the dominant reaction pathway [4,23-25], but at the same time a similar reaction can take place with the corresponding cis-isomer
, which is especially important for chelating ligands, where the formation of trans-[PdL.
Fermented to the same high quality as that available from Japan, the product is a "natural," all-trans CoQ10 with no cis-isomer
The acute toxicity of the cis-isomer
in the rat LD50 160-300 mg/kg body weight is much higher than that of the trans-isomer LD50 > 2000 mg/kg.
As shown in Table 1, the proportion of cis-isomer
decreases as the size and bulk of the alcohol solvent increases.
Cidoxepin is the cis-isomer
of the widely prescribed tricyclic compound doxepin.
The activity of the cis-isomer
is 7 times weaker, probably because of its nonplanar conformation.
Cis-oak lactone and trans-oak lactone: The cis-isomer
is more powerfully aromatic than the trans-isomer.
softening of cell walls, associated with lycopene's bio-accessibility by production of lycopene in tomato tissues more manageable, and by altering some of the trans-isomers of lycopene to cis-isomers
may be necessary.
Total [beta]-carotene concentration and the concentration of some [beta]-carotene cis-isomers
were measured spectrophotometrically and by high-performance liquid chromatography, respectively.
Similar to the notched IZOD impact strength, there is a gradual increasing trend in the tensile strength with increasing the content of cis-isomers
of rubber type.
Concerning the stereoselectivity of glucuronidation, cis-isomers
were glucuronidated faster than trans-isomers (15).
As in the case of cis-stilbene and cis-stilbene oxide, the activities of the cis-isomers
were much lower than those of the trans-compounds (Sugihara et al.