Risk assessment of cartap residue in tea should include the exposure of cartap and its metabolite due to rapid degradation of cartap into nereistoxin. Herein, a reliable method for determination of cartap and nereistoxin in tea was developed by hydrophilic interaction chromatography tandem mass ...

The insecticide cartap (CP) is non-fluorescent in aqueous solutions. This property makes its determination through direct fluorescent method difficult. In acidic medium and at room temperature, palmatine (PAL) can react with cucurbit[7]uril (CB[7]) to form stable complexes, and the fluorescence ...

Development of novel materials for different analytical applications such as optical sensors is one of the major topics of modern scientific research. In this study, a nanosensor based on highly stable silver nanoparticles (AgNPs) conjugated with polystyrene-block-poly(2-vinyl pyridine) [PS-b-P2...

The present study was aimed to the evaluation of toxicological impact of insecticide cartap hydrochloride on photosynthesis and nitrogen assimilation of a non-heterocystous cyanoprokaryote Leptolyngbya foveolarum isolated from paddy fields of Punjab, India. The microorganism tolerated commercial...

The extensive use of cartap, a water soluble carbamate pesticide, raises the possibility of its undesirable toxicity to non-target organisms. Agricultural run-off and vector control sprays are the major sources of exposure to this pesticide for fresh water aquatic organisms. We therefore hypothe...

BackgroundAs part of transition, transmasculine persons often use testosterone gender-affirming hormone therapy; however, there is limited data on its long-term effects. The impact of exogenous testosterone on uterine pathology remains unclear. While testosterone achieves amenorrhea in the major...

A formulation containing 95% delmadinone acetate was compressed at three different pressures. These pressures resulted in a pellet density difference of 19%. In vivo dissolution profiles were determined for five lots of pellets. The pellets were implanted subcutaneously in rats, removed periodic...

Microbial transformation of chlormadinone acetate to delmadinone acetate was investigated using free and immobilized cells of Arthrobacter simplex ATCC 6946 and Bacillus sphaericus ATCC 13805 in liquid–liquid biphasic system and a liposomal medium. For liquid–liquid biphasic system, n-decane, ...

Factors affecting the aqueous biotransformation of chlormadinone acetate to delmadinone acetate by freely suspended cells of Arthrobacter simplex ATCC 6946 and Bacillus sphaericus ATCC 13805 were investigated. The effects of exogenous electron carrier (menadione), cosolvent (dimethylformamide), ...

SummaryEleven strains, representative of the lipomycetaceous genera Dipodascopsis, Lipomyces, Waltomyces, Zygozyma, and Myxozyma, were examined for the formation of Ferrichrome and Ferrichrome C, induced by culturing in low-iron media.Ferrichrome formation was detected in strains of Dipodascopsi...

A new method for the determination of ferrichrome binding to the FhuA transporter in the Escherichia coli outer membrane, ferrichrome accumulation in the periplasmic space, and ferrichrome transport into the cytoplasm was developed. Cells were separated from residual, soluble, radiolabeled ferri...

The pathogenic Streptococcus pneumoniae (S. pneumoniae) has evolved a special mechanism such as pneumococcal iron acquisition ATP binding cassette (PiaABC) to take up siderophore-iron from its host. The cell-surface lipoprotein PiaA, a key component of PiaABC, is the primary receptor to bind fer...

We describe herein the design, synthesis, and biological evaluation of a series of novel protein tyrosine phosphatase 1B (PTP1B) inhibitor retrochalcones having an allyl chain at the C-5 position of their B ring. Biological screening results showed that the majority of these compounds exhibited ...

The synthesis of 2-(5-methoxythiophen-3-yl)ethylamine and some derivatives bearing propyl and 2-phenylethyl substituents on the amino group has been described. The affinities for dopamine D1 and D2 receptors were evaluated by binding assays on rat striatum. None of the compounds show affinity fo...

A selective chiral high performance liquid chromatographic (HPLC) method was developed and validated to separate and quantify the enantiomers of a novel anticonvulsant agent, N-(4-chlorophenyl)-1-(4-pyridyl)ethylamine (AAP-Cl), in rat plasma. After extraction of the plasma samples with ethyl ace...

Water-soluble 2,7-disulfonato-9,10-diphenylanthracene (2,7-dsDPA) and 2,6-disulfonato-9,10-diphenylanthracene (2,6-dsDPA) react with singlet oxygen O2(1Δg) produced by photosensitized reaction and form thermostable endoperoxides. The thermal decomposition of endoperoxides at higher temperatures...

A pronounced, graduated wavelength dependence of the quantum yield Qc of cycloreversion of the endoperoxides (POs) of 1,2,3,4-tetramethylanthracene (TMAPO) and 1,2,3,4-tetramethyl-9,10-diphenylanthracene (TMDPAPO) was observed. A comparison of the excited singlet state energies of the naphthalen...

1H and 13C nuclear spin polarizations are observed during light irradiation of 9,10-diphenylanthracene endoperoxide. It is shown that phenol and 10-hydroxy-10-phenyl-9-anthrone (HPA) are formed via a radical pair mechanism depending on the irradiation wavelength. The first step of the reaction c...

During the photolysis of the endoperoxide of 9,10-diphenylanthracene, two different reactions are observed, depending on the irradiation wavelength: (i) Excitation of the S1 band causes a homolytic cleavage of the peroxide bridge with a quantum yield Q2 = 0.08. (ii) Irradiation of the S2 band le...

In the study at hand we present a design strategy for novel catalysts which can be used for the selective hydrogenation of alkynes to alkenes. The design of the novel catalysts is based on two main ideas, namely (1) the synthesis of Pd nanoparticles via microemulsions and (2) the use of highly-o...