The structure of p -aminobenzoic acid was optimized by ab initio and semiempirical quantum chemical methods. The calculated vibrational spectra were compared with the infrared and Raman data. The full ring vibrational modes were identified and characterized. The torsion and inversion barriers of the amino group were calculated.do...
英文名称4-Aminobenzoic acid 储存温度-80℃储存 运输条件超低温冰袋运输 产品介绍 露置空气和光线中变浅黄色。易溶于沸水,能溶于醇、醚、乙酸乙酯及冰乙酸,微溶于水及苯,不溶于石油醚。0.5%溶液的pH值为3.5。半数致死量(小鼠,经口)2850mg/kg。有刺激性。
(2) the preferred location of the aromatic carboxyl group is the ortho position; and (3) replacement of the phenyl ring of the para-aminobenzoic acid moiety by naphthalene, of nitrogen at the 10-position of the bridge by carbon, and of nitrogen at the 5- and/or 8-position of the B-...
para aminobenzoic acid Para cress Para grass para I Para nut Pará River Pará rubber Para rubber tree para. para-amino benzoic ac paraaminobenzoic acid para-aminobenzoic acid para-aminosalicylic acid Para-anaesthesia Parabanic parabaptism parabasis ...
2.(Government, Politics & Diplomacy) denoting or relating to a force with military structure conducting armed operations against a ruling or occupying power n (Government, Politics & Diplomacy) a.a paramilitary force b.a member of such a force ...
para-amino benzoic acid paraaminobenzoic acid para-aminobenzoic acid para-aminohippuric acid para-aminosalicylic acid para-anaesthesia para-analgesia para-anesthesia paraaortic bodies para-aortic bodies para-aortic body para-aortic field paraballism parabasal body parabasal cell parabasal filament parabige...
Disclosed is a pharmaceutical composition containing p-aminobenzoic acid-N-L-rhamnoside or a pharmaceutically acceptable salt thereof as an active ingredient.
THE LIQUID-CRYSTALLINE MONOMER N-(PARA-METHACRYLOYLOXY-BENZYLIDENE)-PARA-AMINOBENZOIC ACID - ITS SYNTHESIS, CHARACTERIZATION AND POLYMERIZATIONstar polymerpolyacrylamideatom transfer radical polymerization (ATRPsiloxane based six-faced structureThe interconversion between the K 1 and K 2 crystal forms may be ...
Calcium carbonate polymorphs were precipitated at room temperature and 80 C by varying the precipitation pH, carbonate source, effect of solvent in presence and absence of structure directing agent such as para-aminobenzoic acid. Calcite phase of calcium carbonate was obtained when sodium hydrogen ...
Para-aminobenzoic acidLuminescenceTwo new lanthanide containing zeolite Y based luminescent hybrid materials were synthesized and characterized. Exchange of Na+ from zeolite Y with lanthanide ions (Eu3+ or Tb3+) was carried out by ultrasonication and annealing. Para-amino benzoic acid was introduced ...