/SIGNS AND SYMPTOMS/ There are some reported incidents associated with exposure to end-use products containing 4-tert-amylphenol. Dermal, ocular, and inhalation are the primary routes of exposure. Dermal exposure is considered as a very important route of exposure. Most of the incidents are related to irritation reaction. The most common symptoms reported for cases of inhalation exposure were respiratory irritation/burning, irritation to mouth/throat/nose, coughing/choking, shortness of breath, dizziness, flu-like symptoms, and headache. Eye pain, burning of eyes, conjunctivitis, blurring vision, and acute inflammation have been reported in ocular exposure incidents. Neurological effects, such as dizziness, headache and blurred vision have also been reported.
/SIGNS AND SYMPTOMS/ ... Less corrosive than phenol and produce less skin irritation, but they may share phenol's ability to penetrate intact skin ... Water solubility and systemic toxicity decr with increasing size of alkyl constituents. /Alkyl deriv of phenol/
/SURVEILLANCE/ Report of ... leukoderma survey of 169 men exposed to p-tert-amylphenol /is described/. Screening by means of Wood's light technique (an ultra violet light which is absorbed by normally pigmented skin and reflected by nonpigmented skin) revealed no cases of leukoderma in 129 men exposed to /this cmpd/.
/ENDOCRINE MODULATION/ p-tert-Amylphenol /was found/ to be estrogenic in the E-SCREEN assay, which assesses the estrogenicity of a compound by measuring its proliferative effect on estrogen-sensitive cells. The cell number achieved by similar inocula of MCF-7 cells (estrogen-sensitive human breast cancer cells) in the absence of estrogens (negative control) and in the presence of 17beta-estradiol (positive control) is compared with the number of cells achieved with a range of concn of the test chemical. For 4-tert-pentylphenol, a concn of 10 uM was the lowest concn needed for maximal cell yield. For the positive control 17beta-estradiol, the lowest concentration needed was 30 pM. The relative proliferative effect (RPE) is calculated as 100 x (PE-1) of the test compound divided by (PE-1) of 17beta-estradiol. A value of 100 indicates that the compound tested is a full agonist of the estradiol; a value of 0 indicates that the compound lacks estrogenicity at the doses tested. Intermediate values suggest that the compound is a partial agonist of 17beta-estradiol. For 4-tert-pentylphenol, an RPE of 105 was estimated.
Assoc of (14)C-labelled p-tert-amylphenol with human serum and bacterial Micrococcus lysodeikticus proteins was most clear-cut among phenolic deriv. Protein binding could explain interference of serum with germicidal effects of phenolic disinfectants.
合成了一系列不同长度烷基链的双(苯并呋喃)[2,3- b :2′,3′- e ]吡嗪( BBFPz ),并研究了链长对其机械致色发光性能的影响。一些衍生物根据重结晶条件产生两种多晶型物。尽管衍生物的发光性质在溶液状态下几乎相同,但在结晶状态下观察到取决于其烷基链的不同发光。获得的晶体可分为四种堆积图案(A-D型),具有独特的机械致色发光特性。具有直链烷基的D型晶体没有表现出机械致色发光特征。Linear-Me的发光颜色在研磨后会发生轻微的可逆变化。Linear-Et(Form 1)和Linear- s Bu分别属于B型和C型,表现出具有快速自恢复特性的力致变色发光特性。其他晶体表现出机械致变色发光特性,且自恢复率相对较慢。目前的工作展示了一个非常有限的例子,即通过改变烷基链,用特定的发光体骨架来覆盖开/关机械致色发光(MCL)和自恢复特性。
The attachment and cleavage of phenols from solid supports and their single bead mass spectral analysis
摘要:
The attachment of simple phenols to chloromethyl polystyrene, and their rapid cleavage at room temperature is described. Further, phenols from single resin beads can be unequivocally identified by Fourier transform ion cyclotron resonance mass spectrometry of the dansylates prepared in situ. (C) 2000 Elsevier Science Ltd. All rights reserved.
USE OF NITROGEN COMPOUNDS QUATERNISED WITH ALKYLENE OXIDE AND HYDROCARBYL-SUBSTITUTED POLYCARBOXYLIC ACID AS ADDITIVES IN FUELS AND LUBRICANTS
申请人:BASF SE
公开号:US20160130514A1
公开(公告)日:2016-05-12
The invention relates to the use of quaternized nitrogen compounds as a fuel and lubricant additive or kerosene additive, such as in particular as a detergent additive, for decreasing or preventing deposits in the injection systems of direct-injection diesel engines, in particular in common rail injection systems, for decreasing the fuel consumption of direct-injection diesel engines, in particular of diesel engines having common rail injection systems, and for minimizing the power loss in direct-injection diesel engines, in particular in diesel engines having common rail injection systems; the invention further relates to the use as an additive for petrol, in particular for operation of DISI engines.
continuation of our search for novel histamine H3 receptor ligands, a series of twenty four new tert-butyl and tert-pentyl phenoxyalkylamine derivatives (2-25) was synthesized. Compounds with three to four carbon atoms alkyl chain spacer were evaluated for their binding properties at human histamine H3 receptor (hH3R). The highest affinities were observed for 4-pyridyl derivatives 4, 10, 16 and 22 (Ki = 16.0-120 nM)
[EN] TRIAZINE DERIVATIVES<br/>[FR] DÉRIVÉS DE TRIAZINE
申请人:3V SIGMA SPA
公开号:WO2013156272A1
公开(公告)日:2013-10-24
The invention relates to novel intermediates for the preparation of substituted triazines used in particular in the cosmetic, detergent, coating, plastics and textile industries. The invention also relates to the processes for preparation of said intermediates and for the conversion of the latter into final products.
申请人:SEIWA KASEI COMPANY LIMITED 세이와 카세이 콤파니 리미티드(520100108171)
公开号:KR20150074160A
公开(公告)日:2015-07-01
본 발명은 우수한 멜라닌 생성 억제 효과(미백 효과), 항균 효과를 가짐과 동시에 경시적 안정성 등이 우수하여 화장료의 원료로서 바람직하게 사용되는 화합물로서, tert-부틸기 등이 치환된 페놀기의 수산기에, 수산기 등이 치환된 프로필기가 결합된 프로필 페닐 에테르 유도체 화합물을 제공하며, 또한 상기 화합물을 유효성분으로서 함유하는 멜라닌 생성 억제제, 미백제, 항균제 및 상기 화합물을 배합하는 것을 특징으로 하는 화장료를 제공한다.
Design, synthesis and biological evaluation of uncharged catechol derivatives as selective inhibitors of PTP1B
作者:Xiang-Qian Li、Qi Xu、Jiao Luo、Li-Jun Wang、Bo Jiang、Ren-Shuai Zhang、Da-Yong Shi
DOI:10.1016/j.ejmech.2017.05.007
日期:2017.8
obesity. However, the development of charged PTP1B inhibitors was restricted due to their low cell permeability and poor bioavailability. Based on active natural products, two series of uncharged catecholderivatives were identified as PTP1B inhibitors by targeting a secondary aryl phosphate-binding site as well as the catalytic site. The most potent inhibitor 22 showed an IC50 of 0.487 μM against PTP1B and