monomer was filtered off, recrystallized from ethanol, and dried under vacuum.
The former reacts with 2,4-dinitrophenyl hydrazine in an alkaline medium to produce a brown colored complex, 2,4-dinitrophenyl hydrazone
, which is measured with a UV-Vis spectrophotometer at 505 nm (Reitman and Frankel 1957).
of the corresponding NC[H.sub.3] hydrazone
(58) did not proceed readily and gave only a curious compound formed by the rearrangement of the methyl group at the 1-position to the 3-position in very low yield with high recovery of the starting material.
Syntesis and characterization of platinum-sterol hydrazone
complexe with biological activity against Leishmania (L) mexicana.
Banerjee and co-workers (6) observed that carbonyl cyanide m chlorophenyl hydrazone
(CCCP), verapamil and 2,4-dinitro phenol (DNP) increased the accumulation of drug possibly due to inhibition of active eflux.
The authors report that, in A431 skin carcinoma cells, zinc increased [H.sub.2][O.sub.2] production, which could be significantly inhibited with the mitochondrial inhibitor carbonyl cyanide 3-chlorophenyl hydrazone
. Zinc also caused a loss of mitochondrial membrane potential, which further implicates the mitochondrial as the source of the increased [H.sub.2][O.sub.2].
The chromogen, 3-methyl-2benzothiazolinone hydrazone
(MBTH, Sigma Aldrich) was added to the substrate.
Their topics include cyclative cleavage as a solid-phase strategy, photolabile linker units, hydrazone
linker units, diversity cleavage strategies from phosphorus linkers, silicon and germanium linker units, linkers releasing olefins or cyclo-olefins by ring closing metathesis, and solid-phase radiochemistry.
, a multi-tiered open cooler positioned near the entrance, stocked with
For analysis, addition of MBTH (3-methyl-2-benzothiazolinone hydrazone
) reacting with PA produces a molecule called azine that is measured by a colorimeter.
Effect of pyridoxal hydro-chloride-2,4- dinitrophenyl hydrazone
on the corrosion of mild steel in HCl.
The membrane was then incubated at room temperature in a buffer consisting of 100 ml 5 mmol/l CaC[l.sub.2] containing 10 mmol/l L-DOPA (Sangon) mixed with 25 ml 0.3% 3-methyl-2-benzothiazolinone hydrazone
(MBTH, dissolved in ethanol; Sigma) until color developed (Durran et al., 1993).