NIOSH REL: TWA 2 ppm (11 mg/m3), IDLH 200 ppm; OSHA PEL: TWA 5
ppm (30 mg/m3); ACGIH TLV: TWA 2 ppm (adopted).
LogP:
2.37 at 25℃
物理描述:
P-nitrotoluene appears as a yellow liquid with a weak aromatic odor. Toxic. Insoluble in water. Combustible but may take some effort to ignite. Produces toxic oxides of nitrogen when burned. In a spill, immediate steps should be taken to limit its spread to the environment. Can easily penetrate the soil and contaminate groundwater or nearby streams. Used to make other chemicals.
颜色/状态:
Yellowish crystals
气味:
Bitter almond
蒸汽密度:
4.72 (NTP, 1992) (Relative to Air)
蒸汽压力:
0.0157 mm Hg at 25 °C /extrapolated/
亨利常数:
5.63e-06 atm-m3/mole
稳定性/保质期:
稳定性:稳定。
禁配物:强氧化剂、强还原剂、强碱。
避免接触的条件:受热。
聚合危害:不聚合。
分解产物:氮氧化物。
自燃温度:
Auto-ignition temperature: 450 °C
分解:
Decomposes violently at 279 °C and will burn even in absence of air.
粘度:
1.2 mPa (= cP) at 60 °C
燃烧热:
897.0 kg.cal at 20 °C (liquid); 888.6 kg.cal at 20 °C (solid)
The metabolism and excretion of 2-, 3-, and 4-nitrotoluene (2NT, 3NT, and 4NT, respectively) were studied in male Fischer 344 rats. ... The major metabolites excreted in urine in 72 hr after administration of 4NT were 4-nitrobenzoic acid (28% of the dose), 4-acetamidobenzoic acid (27% of the dose), and 4-nitrohippuric acid (13% of the dose).
Eight metabolites were found in urine following administration of 4-nitrotoluene. ... For three rats 72 hr after treatment, the mean percentage of the dose administered plus or minus the standard error the mean for each metabolite was: 4-nitrobenzoic acid (28.0 +/- 2.6); 4-acetamidobenzoic acid (27.1 +/- 3.0); 4-nitrohippuric acid (13.0 +/- 0.7); S-(4-nitrobenzyl)-N-acetylcysteine (3.7 +/- 0.1); 4-nitrobenzyl glucuronide (1.4 +/- 0.1); 4-aminobenzoic acid (0.8 +/- 0.1); S-methyl-2- nitrophenyl glucuronide (0.3 +/- 0.0); and 5-methyl-2-nitrophenyl sulfate (0.2 +/- 0.0)
Evaluation: There is inadequate evidence in humans for the carcinogenicity of nitrotoluenes. There is inadequate evidence in experimental animals for the carcinogenicity of ... 4-nitrotoluene. ... Overall evaluation: Nitrotoluenes are not classifiable as to their carcinogenicity to humans (Group 3).
The metabolism and excretion of 2-, 3-, and 4-nitrotoluene (2NT, 3NT, and 4NT, respectively) were studied in male Fischer 344 rats. Excreta were collected for 72 hr after an oral dose (200 mg/kg) of radiolabeled 2NT, 3NT, or 4NT. Radiolabel from each NT isomer was rapidly excreted (86, 73 and 74% of the dose for 2NT, 3NT, and 4NT, respectively in 24 hr). The urine was the major route of excretion with 70-85% of the dose being excreted by that route in 72 hr. Five to 13% and 0.0 to 0.1% of the dose was excreted in the feces and expired air, respectively, in 72 hr. ...
来源:Hazardous Substances Data Bank (HSDB)
吸收、分配和排泄
该物质可以通过吸入其气溶胶、通过皮肤接触以及摄入进入人体。
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion
In bile duct-cannulated male Fischer 344 rats administered 200 mg/kg bw nitro (14)C toluene isomers ... 9.8% of the 4-nitrotoluene dose was excreted in bile, compared to 1.3% in females.
Compositions for Treatment of Cystic Fibrosis and Other Chronic Diseases
申请人:Vertex Pharmaceuticals Incorporated
公开号:US20150231142A1
公开(公告)日:2015-08-20
The present invention relates to pharmaceutical compositions comprising an inhibitor of epithelial sodium channel activity in combination with at least one ABC Transporter modulator compound of Formula A, Formula B, Formula C, or Formula D. The invention also relates to pharmaceutical formulations thereof, and to methods of using such compositions in the treatment of CFTR mediated diseases, particularly cystic fibrosis using the pharmaceutical combination compositions.
Iron-catalyzed thioesterification of methylarenes with thiols in water
作者:Liang Wang、Jing Cao、Qun Chen、Ming-yang He
DOI:10.1016/j.tetlet.2014.10.155
日期:2014.12
An iron-catalyzed coupling reaction of methylarenes with thiols leading to thioesters has been developed. The reactions were carried out in water with tert-butyl hydroperoxide (TBHP) as the oxidant and polyoxyethanyl α-tocopheryl sebacate (PTS) as the surfactant. The reaction medium is compatible with a series of functional groups and can be reused.
[EN] POLYCONJUGATES FOR DELIVERY OF RNAI TRIGGERS TO TUMOR CELLS IN VIVO<br/>[FR] POLYCONJUGUÉS POUR L'ADMINISTRATION DE DÉCLENCHEURS D'ARNI À DES CELLULES TUMORALES IN VIVO
申请人:ARROWHEAD RES CORP
公开号:WO2015021092A1
公开(公告)日:2015-02-12
The present invention is directed compositions for delivery of RNA interference (RNAi) triggers to integrin positive tumor cells in vivo. The compositions comprise RGD ligand- targeted amphipathic membrane active polyamines reversibly modified with enzyme cleavable dipeptide-amidobenzyl-carbonate masking agents. Modification masks membrane activity of the polymer while reversibility provides physiological responsiveness. The reversibly modified polyamines (dynamic polyconjugate or conjugate) are further covalently linked to an RNAi trigger.
The present invention is directed to novel compounds of Formula (I) and pharmaceutically acceptable salts thereof,
pharmaceutical compositions and their use as dual chromaphores having inhibitory activity against PDE4 and muscarinic acetylcholine receptors (mAChRs), and thus being useful for treating respiratory diseases.
[EN] DUAL PHARMACOPHORES - PDE4-MUSCARINIC ANTAGONISTICS<br/>[FR] PHARMACOPHORES DUALS, ANTAGONISTES DES RÉCEPTEURS MUSCARINIQUES ET INHIBITEURS DE L'ACTIVITÉ PDE4
申请人:GLAXO GROUP LTD
公开号:WO2009100169A1
公开(公告)日:2009-08-13
The present invention is directed to novel compounds of Formula's (I) - (VI), and pharmaceutically acceptable salts thereof, pharmaceutical compositions and their use in therapy, for example as inhibitors of phosphodiesterase type IV (PDE4) and as antagonists of muscarinic acetylcholine receptors (mAChRs), in the treatment of and/or prophylaxis of respiratory diseases, including inflammatory and/or allergic diseases such as chronic obstructive pulmonary disease (COPD), asthma, rhinitis (e.g. allergic rhinitis), atopic dermatitis or psoriasis.