目錄:北京索萊寶科技有限公司>>酸和鹽.>> N8320α-甲氧基酚(愈創(chuàng)木酚)-25g
愈創(chuàng)木酚(guaiacol):N8320-α-甲氧基酚(愈創(chuàng)木酚)-25g是一種白色或微黃色結(jié)晶或無色淡黃色透明油狀液體,有特殊芳香氣味,學(xué)名鄰羥基茴香醚、甘油醚、愈創(chuàng)木酚甘油醚、鄰羥基甘油醚等,自然界中存在于愈創(chuàng)木酚樹脂、松油和硬木干餾油中,是一種重要的精細(xì)化工中間體,廣泛應(yīng)用于醫(yī)藥、香料及染料的合成。
中文名:2-甲氧基酚,N8320-α-甲氧基酚(愈創(chuàng)木酚)-25g
英文名:2-Methoxyphenol
別 稱:鄰甲氧基酚、甲基兒茶酚
化學(xué)式:C7H8O2
分子量:124.13
CAS:90-05-1
EINECS:201-964-7
熔 點(diǎn):27-29℃
沸 點(diǎn):205℃
水溶性:17g/L(15℃)
密 度:1.12 g/ml
閃 點(diǎn):82℃
性狀:白色或微黃色結(jié)晶或無色淡黃色透明油狀液體。有特殊芳香氣味。 略溶于水和苯。易溶于甘油。
床榆木粉的提取:
天然提取N8320-α-甲氧基酚(愈創(chuàng)木酚)-25g:從林化雜酚中提取天然愈創(chuàng)木酚主要分為以下幾道工序,分別為:
1.萃取,將含有愈創(chuàng)木酚的林化雜酚抽入不銹鋼反應(yīng)釜,然后加入濃度為10%的氫氧化鈉,使兩者充分?jǐn)嚢杈鶆颉?/span>
2.過濾,當(dāng)萃取物冷卻結(jié)晶后,就抽出上層母液。
3.清水洗滌,并抽吸出洗滌水。第四道工序是酸析,放入濃度調(diào)30%的硫酸,并充分?jǐn)嚢瑁嵛鐾戤?,將硫酸鹽廢水從底部排出,然后又用清水洗滌粗愈創(chuàng)木酚。以上四道工序在同一個不銹鋼反應(yīng)釜中進(jìn)行。
4.減壓精餾,將水洗后的粗愈創(chuàng)木酚抽入不銹鋼精餾釜中,通過加熱設(shè)備對精餾釜升溫,釜內(nèi)真空度與收集天然愈創(chuàng)木酚的溫度一一對應(yīng)。
愈創(chuàng)木酚的用途:
1.醫(yī)藥及中間體、香料及染料合成等
2.用作分析試劑,如作為特異性底物用于漆酶酶活的測定 (緩沖液為琥珀酸或醋酸,終濃度為0.05mol/L, pH 4.5,30℃反應(yīng)30min,于465nm測定吸光度變化值)
愈創(chuàng)木酚的實驗室制備:
愈創(chuàng)木酚有多種實驗室制法。例如可以以鄰硝基氯苯為原料,通過威廉姆遜合成法合成鄰硝基苯甲醚,再還原硝基為氨基,后通過重氮化水解反應(yīng)合成終目標(biāo)產(chǎn)物。中國與日本企業(yè)也常用此途徑工業(yè)生產(chǎn)愈創(chuàng)木酚。另一種合成愈創(chuàng)木酚的方法是鄰苯二酚甲基化后再選擇性部分水解:
C6H4(OCH3)2+ C2H5SNa → C6H4(OCH3)(ONa) + C2H5SCH3
Storage Temperature: Room Temperature
Product Number: M8230
Product Description
Appearance: White to Light Yellow and Pink,Liquid or Solid
Molecular formula: C7H8O2
Molecular weight: 124.1
Melting point: 27-29 °C (upon cooling, guaiacol may remain as a liquid for a long time even at a much lower
temperature)
This product can be used as a hydrogen donor (substrate) in the assay of peroxidase.Upon oxidation, it forms tetraguaiacol with a subsequent change in λmax to 470 nm with an EmM = 26.6.
The presence of guaiacol in cork stoppers is responsible for some cases of cork taint causing unpleasant alterations to wine. Data suggests that guaiacol-mediated cork taint should be attributed to the degradative action on vanillic acid by bacterial strains growing on cork to produce guaiacol. Two kinds of creosote have been found based on historical evidence of the medicinal uses and origins. One is wood tar creosote, a distillate of wood-tar that contains creosol and guaiacol. Guaiacol is able to inhibit prostaglandin biosynthesis like a classic NSAID, but it does not induce gastric damage.
Preparation Instructions
One gram of guaiacol dissolves in 60-70 ml of water or 1 g of glycerol. It is miscible with alcohol, chloroform, ether, oils, glacial acetic acid, and slightly soluble in petrolium ether. Although it is soluble in a sodium hydroxide solution, guaiacol forms a sparingly soluble compound in a moderay concentrated potassium hydroxide solution.
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