Metabolite characterization studies /in rats/ showed that the main component detected in excreta was the unchanged parent compound which accounted for 62-75% of the dose independent of the dosing regime and sex. Metabolite 1, the glucuronic acid conjugate of the parent compound, ranged from 4 to 23% of the dose. Metabolite fractions 2 and 3 accounted for up to 3 and 7% of the dose, respectively. The proposed major pathway for biotransformation is via conjugation of the aromatic hydroxyl group with glucuronic acid. Prior to fecal excretion, hydrolysis in the intestine converts the conjugate back to the parent compound giving rise to enterohepatic circulation. This demonstrates that, although the main residues in the feces are due to unchanged parent compound, the absorption rate is close to 100% of the given dose. Furthermore, hydroxylation took place in the positions 2, 3 and 4 of the cyclohexyl ring followed by formation of glucuronic acid and sulfate conjugates of these hydroxylated metabolites. Identification of radioactive residues ranged from 88 to 99% and was independent of dose and sex.
IDENTIFICATION AND USE: Fenhexamid is a solid. Fenhexamid is a specific fungicide for the control of Botrytis cinerea, Monilinia fructigena, Monilinia laxa, and Sclerotinia sclerotiorum. HUMAN EXPOSURE AND TOXICITY: Fenhexamid showed endocrine disruptor activity as antiandrogen in an androgen receptor reporter assay in engineered human breast cancer cells. Fenhexamid increase miR-21 expression with downstream antiestrogenic activity in MCF-7, T47D, and MDA-MB-231 human breast cancer cells. ANIMAL STUDIES: It was slightly irritating when applied to the skin of rabbits, and was minimally irritating when instilled into the eyes of the same species. Results of skin sensitization testing in guinea pigs, employing the Buehler method, were negative. A 1-yr chronic oral toxicity study in dogs was conducted, in which decreased red blood cell (RBC) counts, hemoglobin and hematocrit and increased Heinz bodies in RBC were seen at the LOAEL of 124/133 mg/kg/day in males/females; also, in females, increased absolute and relative adrenal weights correlated with histopathological observations of increases in the incidence and severity of intracytoplasmic vacuoles in the adrenal cortex. In a developmental toxicity study, fenhexamid was administered to 16 female rabbits by gavage at dose levels of 0, 100, 300 or 1000 mg/kg/day from days 6 through 18 of gestation. No treatment-related effects were seen on mortality, general appearance or behavior. Administration of the test compound did not induce any treatment-related fetal malformations or deviations at any of the doses tested under the conditions of this study. All effects on intrauterine development were correlated with maternal toxicity and, therefore, no primary developmental effect was evident. Fenhexamid was not teratogenic up to and including 1000 mg/kg/day, the limit dose. Fenhexamid was tested in the following assays: Reverse Gene Mutation -Salmonella, non-mutagenic with or without metabolic activation; Forward Gene Mutation -HGPRT locus, non-mutagenic with or without metabolic activation; Micronucleus Assay -Mice, non-mutagenic; Unscheduled DNA Synthesis -Rat hepatocytes, non-mutagenic; Chromosome Aberration -CHO cells, non-mutagenic with or without metabolic activation. ECOTOXICITY STUDIES: Fenhexamid is moderately toxic to rainbow trout and bluegill sunfish, and slightly toxic to sheepshead minnow. Studies on the toxicity of fenhexamid to beneficial insects were done with formulated fenhexamid (50% a.i.). The NOEC based on mortality of predacious mite and rove beetle was 2 kg formulated fenhexamid/ha. The NOEC for parasitic wasp was 4 kg formulated fenhexamid/ha.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
致癌性证据
癌症分类:不太可能对人类致癌
Cancer Classification: Not Likely to be Carcinogenic to Humans
来源:Hazardous Substances Data Bank (HSDB)
毒理性
致癌物分类
对人类无致癌性(未列入国际癌症研究机构IARC清单)。
No indication of carcinogenicity to humans (not listed by IARC).
来源:Toxin and Toxin Target Database (T3DB)
毒理性
毒性数据
LC50 (大鼠) > 5,057 毫克/立方米/4小时
LC50 (rat) > 5,057 mg/m3/4h
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
... In this study, the effects of two fungicides, fenhexamid and myclobutanil were investigated individually and in combination on two human cell lines, SH-SY5Y neuronal cells and U-251 MG glial cells. After 48 hr of incubation with increasing concentrations of pesticides ranging from 1 to 1000 uM, gene expression profiles were studied in addition to toxicity end points, including cell viability, mitochondrial depolarization as well as cellular glutathione maintenance. There were no significant differences between the susceptibility of the two cell lines in terms of cell viability assessment or mitochondrial membrane potential, when agents were administered either individually or in combination. By contrast, in the presence of the fungicides, the SH-SY5Y cells showed significantly greater susceptibility to oxidative stress in terms of total thiol depletion in comparison with the astrocytic cells. Treatment with the two pesticides led to significant changes in the cell lines' expression of several genes which regulate cell cycle control and growth (RB1, TIMP1) as well as responses to DNA attrition (ATM and CDA25A) and control of apoptosis (FAS). There was no evidence in this study that the combination of fenhexamid and myclobutanil was significantly more toxic than individual exposure, although gene expression changes suggested there may be differences in the sub-lethal response of both cell lines to both individual and combined exposure.
The absorption, distribution, metabolism and excretion of [Phenyl-UL-(14)C] KBR 2738 /(pure Fenhexamid)/ in male and female Wistar rats was determined after a single oral low dose of 1 mg/kg, a single oral high dose of 100 mg/kg and 15 repeated low doses of 1 mg/kg/day. (14)C-KBR 2738 was rapidly absorbed from the gastrointestinal (GI) tract in all dose groups. After single and repeated administration of the low dose, the plasma concentration peaked within 5 to 10 minutes. After administration of the high dose, the maximum was detected 40 to 90 minutes post-dosing. The absorption of the test compound was shown to be almost complete in a bile-cannulation experiment, as more than 97% of the administered dose was absorbed from the GI tract 48 hours after intraduodenal administration. These results are indicative of a pronounced first pass effect and enterohepatic circulation. Tissue residues declined rapidly and after 48 hours the total radioactivity residue in the body, excluding the GI tract, was <0.3% of the administered dose in all dose groups. Liver and kidney were the organs with the highest concentrations of radioactivity in all dose groups. There was no evidence of bioaccumulation. Excretion was rapid and almost complete with feces as the major route of excretion. Approximately 62-81% of the recovered radioactivity was found in feces, and 15-36% in urine within 48 hours post-dosing. More than 90% of the recovered radioactivity was eliminated with bile in the bile cannulation experiment. Only 0.02% of the administered radioactivity was recovered in exhaled air. Radioactive residues in rat bodies (excluding GI tract) were significantly lower in females after a single high dose. There was significantly higher renal excretion for females in comparison with males after 15 repeated low doses. In both sexes renal excretion was significantly higher after a single low dose when compared with a single high dose.
In a 56-day bioavailability study, KBR 2738 (95.4% purity) was administered to 10/sex/dose SPF-bred Wistar rats in their diet (1% peanut oil excipient) at dose levels of 0, 1000, 5000, 10,000, 15,000 or 20,000 ppm (57.5, 284.7, 575.7, 943.8, and 1217.1 mg/kg/day for males and 78.0, 407.1, 896.5, 1492.5 and 1896.7 mg/kg for females) for 56 days. The purpose of this study was to determine whether or not there was saturation of intestinal absorption of KBR 2738 when given in the diet at concentrations of 10,000 to 20,000 ppm. Therefore, KBR 2738 levels were determined in plasma and urine samples after a treatment period of 3 or 4 weeks, when steady state conditions were expected. Results showed that plasma samples taken from 20,000 ppm rats had KBR 2738 levels below the limit of detection. Urine samples showed measurable excretion of conjugated KBR 2738 indicating intestinal absorption in the dose range examined. Males had a maximum excretion rate at 15,000 ppm indicating a saturation of intestinal absorption between 15,000 and 20,000 ppm. Urine excretion in females was somewhat lower than in males, at concentrations of 10,000 ppm and above. The highest value was determined at 20,000 ppm suggesting that saturation in intestinal absorption was not achieved with this dose level in females.
[EN] ACC INHIBITORS AND USES THEREOF<br/>[FR] INHIBITEURS DE L'ACC ET UTILISATIONS ASSOCIÉES
申请人:GILEAD APOLLO LLC
公开号:WO2017075056A1
公开(公告)日:2017-05-04
The present invention provides compounds I and II useful as inhibitors of Acetyl CoA Carboxylase (ACC), compositions thereof, and methods of using the same.
[EN] BICYCLYL-SUBSTITUTED ISOTHIAZOLINE COMPOUNDS<br/>[FR] COMPOSÉS ISOTHIAZOLINE SUBSTITUÉS PAR UN BICYCLYLE
申请人:BASF SE
公开号:WO2014206910A1
公开(公告)日:2014-12-31
The present invention relates to bicyclyl-substituted isothiazoline compounds of formula (I) wherein the variables are as defined in the claims and description. The compounds are useful for combating or controlling invertebrate pests, in particular arthropod pests and nematodes. The invention also relates to a method for controlling invertebrate pests by using these compounds and to plant propagation material and to an agricultural and a veterinary composition comprising said compounds.
The present invention relates to azoline compounds of formula (I) wherein A, B1, B2, B3, G1, G2, X1, R1, R3a, R3b, Rg1 and Rg2 are as defined in the claims and the description. The compounds are useful for combating or controlling invertebrate pests, in particular arthropod pests and nematodes. The invention also relates to a method for controlling invertebrate pests by using these compounds and to plant propagation material and to an agricultural and a veterinary composition comprising said compounds.
[EN] SUBSTITUTED QUINAZOLINES AS FUNGICIDES<br/>[FR] QUINAZOLINES SUBSTITUÉES, UTILISÉES EN TANT QUE FONGICIDES
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2010136475A1
公开(公告)日:2010-12-02
The present invention relates to a compound of formula (I) wherein wherein the substituents have the definitions as defined in claim 1or a salt or a N-oxide thereof, their use and methods for the control and/or prevention of microbial infection, particularly fungal infection, in plants and to processes for the preparation of these compounds.