CAS: 1707-75-1; 1,1-Diphenyl-2-Picrylhydrazine

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CAS号147506-92-1 α,α-diphenyl-β-... | CAS号1898-66-4 2,2-联苯基-1-苦基肼基 | CAS号884-35-5 丁香酸甲酯 | CAS号134-96-3 3,5-二甲氧基-4-羟基苯甲... | CAS号218600-44-3 2-氰基-3,12-二氧代齐墩... | CAS号50-81-7 抗坏血酸 | CAS号88-88-0 2,4,6-三硝基氯苯 | CAS号530-50-7 N,N-二苯基肼 | CAS号21416-60-4 eqimolar comple... | CAS号120-80-9 邻苯二酚 | CAS号103-82-2 苯乙酸 | CAS号147506-92-1 α,α-diphenyl-β-... | CAS号179167-24-9 4-(N-(2,4,6-tri... | CAS号617-94-7 2-苯基-2-丙醇 | CAS号535-80-8 间氯苯甲酸 | CAS号143-07-7 月桂酸 | CAS号558-30-5 甲基环氧丙烷 | CAS号67-64-1 丙酮 | CAS号75-65-0 叔丁醇 | CAS号76-89-1 二苯乙醇酸甲酯

📜2,2-Diphenyl-1-Picrylhydrazyl置于奎诺二甲基丙烯酸酯体系中,用 甲醇,水 用作溶剂,化学反应生成1,1-二苯基-2-苦味酰肼
参考文献:Total Antioxidant Capacity Of Some Commercial Fruit Juices: Electrochemical And Spectrophotometrical Approaches
标题:Total Antioxidant Capacity Of Some Commercial Fruit Juices: Electrochemical And Spectrophotometrical Approaches
摘要:本文旨在使用 Dpph-(2,2-二苯基-1-苦基肼)/dpph(2,2-二苯基-1-苦基肼)氧化还原对偶,通过分光光度法和双计量法评估一些商用果汁(即柑橘类果汁)的总抗氧化能力.Trolox® 被选为标准抗氧化剂.分光光度法是根据 Dpph 溶液吸光度的下降进行测定.在双计量法中,研究了电位差,δe,Dpph-浓度和 Trolox® 浓度等参数的影响.Trolox® 的校准图在 5 至 30 µm 之间呈线性关系(y = 0.059 X + 0.0564,其中 Y 代表电流强度值,以 μa 表示;X 代表 Trolox® 浓度值,以 μm 表示;R2 = 0.9944).生物比色法的 R.S.D. 值为 1.29%(n = 10,C = 15 μm Trolox®).在分光光度法中,Trolox® 的校准图在 0.01 至 0.125 Mm 之间呈线性关系(y =-9.5789 X+1.4533,其中 Y 代表吸光度值,X 代表 Trolox® 浓度值,以 Mm 表示;R2 = 0.9963).分光光度法的 R.S.D. 值为 2.05%.这两种方法都适用于实际样品(天然果汁和软饮料)中总抗氧化活性的测定,结果非常一致.
Doi:10.3390/molecules14010480

专利信息

专利号:US-11976038-B1
优先权日:2023-03-24
标题:Preparation method of resveratrol nervonic acid ester
发明人：WANG QIANG; GUO QIN; LI TIAN; HU XIAONING; LIANG MANZHU; QU YANG; LI ZHENYUAN
权利人:INSTITUTE OF FOOD SCIENCE AND TECH CHINESE ACADEMY OF AGRICULTURAL SCIENCES
摘要:The present disclosure provides a preparation method of resveratrol nervonic acid ester, comprising the following steps of: step 1: weighing resveratrol, a nervonic acid and thiocarbonyldiimidazole according to a molar ratio of 1:1:0.8 to 1:7:11.2 in a reactor; step 2: adding a certain amount of solvent into the reactor to completely dissolve the reactants; and step 3: stirring for reaction at room temperature for 30 min to 180 min. The preparation method is safe, efficient and clean, and enables synthesis of the resveratrol nervonic acid ester with high conversion rate, high purity and high yield.

专利号:US-11078178-B2
优先权日:2017-09-04
标 题 :6-chromanol derivatives and their synthesis
发明人：BEUMER RAPHAEL; BONRATH WERNER; DELPHO JAN-MARC; JORAY MARCEL; MEDLOCK JONATHAN ALAN; NETSCHER THOMAS; SORIANO DOMENICO; STEMMLER RENÉ TOBIAS
权利人:DSM IP ASSETS BV
摘要:The present invention relates to novel compounds which are particularly useful for the synthesis of novel chromanol derivatives. These compounds have interesting properties. Particularly, the novel chromanol derivatives have interesting antioxidant properties as well as flavours and fragrances.

专利号:US-2023080477-A1
优先权日:2021-09-06
标题 :Process of synthesis of novel chromium (iii) complexes of schiff base ligands and their use there of as therapeutic agents
发明人：KOTHARI richa
权利人:KOTHARI richa
摘要:Chromium (III) Complexes of the following Schiff base ligands derived from N-[4-methyl phenyl-3-oxo-3-[2-1H-Pyrrole-3yl hyrazinyl] propanamide and cinnamaldehyde were synthesized. Schiff base Ligands and their coordinated chromium (III) complexes were characterized using elemental analysis, UV-Vis, FT-IR, conductance data, TEM, XRD, and thermogravimetric analysis. In the UV-VIS study, a bathochromic shift of approximately 80 nm indicates the formation of chromium(III) complex by more than one coordinating site. The FT-IR spectra of complexes clearly show that the formation of Cr—N bond between ligand and Cr(III) ion at 1680 cm −1 , while the TGA analysis shows the presence of six coordinated water molecules in the complex. Based on the physicochemical analysis, the following empirical formula has been assigned to chromium (III) complexes: [Cr(C 29 H 33 N 17 S 2 )]Cl 3 .6H 2 O and [Cr(C 35 H 36 Cl 2 N 6 O 4 )]Cl 3 .6H2O. Moreover, the antioxidant activity of complexes was evaluated by using 2,2′-diphenyl-1-picrylhydrazyl(DPPH) free radical assay which showed that the complexes have a higher antioxidant activity than that of Schiff base ligands.

专利号:US-2011031430-A1
优先权日:2009-08-07
标 题 :Synthesis of water-soluble organic nanoparticles as epr standard
发明人：CAO Y CHARLES; CHEN OU; ANGERHOFER ALEXANDER
权利人:UNIV FLORIDA
摘要:Novel water soluble paramagnetic organic nanoparticles are formed by a novel method where an organic solution of an organic compound is injected into water under agitation that is maintained for a desired period of time for nanoparticle growth followed by termination of the growth by the addition of an aqueous surfactant solution. The size of the nanoparticles depends on the time between injection and addition of the surfactant solution. In embodiments of the invention, the water soluble paramagnetic organic nanoparticles can be DPPH nanoparticles, DPPH nanoparticles doped with DPPH-H, or core/shell nanoparticles where a DPPH core is covered by a DPPH-H shell.

专利号:US-11806363-B1
优先权日:2023-03-20
标题 :Green synthesis of silver nanoparticles using euphorbia dendroides aqueous extract
发明人：EL-MOATY HEBA IBRAHIM ABD; ABU-KHUDIR RASHA; KHALIL MOSTAFA M H; SOLIMAN NADIA A
权利人:UNIV KING FAISAL
摘要:Euphorbia dendroides silver nanoparticles can have a crystalline structure and an average particle size ranging from about 7 nm to about 13 nm. The Euphorbia dendroides silver nanoparticles may be synthesized by providing a Euphorbia dendroides extract and combining the Euphorbia dendroides extract with silver nitrate. The resultant Euphorbia dendroides silver nanoparticles may be useful in treating a variety of conditions including bacterial infections, diabetes, inflammation, and cancer.

专利号:CN-117700425-A
优先权日:2023-12-01
标 题 :Synthesis method and application of one-pot two-step synthesis of 2, 4-aryl-4H-pyranocoumarin compound