what is strcture of phenol?
399292
The hexagram, representing  benzene, but with one arm sticking out with an -OH group. Phenol is an alcohol; therefore has to have the -OH functional group.
828162
It is known by its initials as TCP.  Oldtimers will recognize TCP as a gasoline additive from the sixties.  Shell Oil used to advertise that their gas contained TCP.\n\nTCP is made by reacting phosphorus oxychloride with cresylic acids.  The "ortho" part comes from the position of the methyl group on the phenol as in ortho, para, meta.  Cresylic acids were by-products of coke production (iron production not the other kinds!) but are now made synthetically.  HCl is a by-product that was removed by scrubbing with sodium hydroxide.  \n\nA secondary use for TCP was as a flame-retardant plasticizer for PVC (polyvinyl chloride).
831073
phenols and catechins that help in cancer prevention
239239
The SS used it first. Then it was picked up and started in Texas here in the early 80's because they could get the ingredients off the shelf at any hardware and or drug store. They were using Ether base to cut phenol acetone. It's poison.
777369
ozone\n\nREAD THE PACKAGE
309229
Phenol is an anesthetic.  It numbs nerve endings temporarily.  It's mostly used to deaden gums before injection of longer-acting anesthetics like Novocaine and Lidocaine.
317532
Try here:\n\nhttp://megachem.co.jp/Structures/pdf/SM105.pdf#search='strut%20apparatus'
824314
Two types of preps.\n\nA. To make the solution you use in titrations.\n\nPreparation of Phenolphthalein Indicator (Acid/Base Indicator) \n\n1. - Weigh out 0.5 g of phenolphthalein.\n\n2. - Prepare a 50% ethanol (ethyl alcohol) solution consisting of 50ml ethanol and 50 ml water. \n\n3. - Dissolve the phenolphthalein thoroughly in the 50% ethanol solution. \n\n4. - Use from a bottle fitted with an eye dropper. Store the rest in a stoppered bottle. \n\n\nB. To synthesize the chemical you have to go back to references in the 1880s or the patent literature of the 1950s.  You will need to find a university library for that.  The basics are the condensation reaction of phenol and phthalic anhydride.  A more modern method is given in the reference.
178139
Flavonoids are polyphenolic compounds that are ubiquitous in nature and are categorized, according to chemical structure, into flavonols, flavones, flavanones, isoflavones, catechins, anthocyanidins and chalcones. Over 4,000 flavonoids have been identified, many of which occur in fruits, vegetables and beverages (tea, coffee, beer, wine and fruit drinks). The flavonoids have aroused considerable interest recently because of their potential beneficial effects on human health.
551926
Bark consists of phloem which conducts food material.If we peel complete bark plant will die.Bark is the outermost layer of stems and roots of woody plants such as trees. It overlays the wood and consists of three layers, the cork, the phloem, and the vascular cambium - in other words, most of the stem except for the xylem (this division may seem arbitrary, but the easiest way to split a stem parallel to its length is by pulling the bark away from the xylem). The bark of some trees is edible.The vascular cambium is the only part of a woody stem where cell division occurs. It contains undifferentiated cells that divide rapidly to produce secondary xylem to the inside and secondary phloem to the outside.Along with the xylem, the phloem is one of the two tissues inside a plant that are involved with fluid transport. The phloem transports organic molecules (particularly sugars) to wherever they are needed.BarkCork, sometimes confused with bark in colloquial speech, is the outermost layer of a woody stem, derived from the cork cambium. It serves as protection against damage, parasites and diseases, as well as dehydration and extreme temperatures. Cork can contain antiseptics like tannins. Some cork is substantially thicker, providing further insulation and giving the bark a characteristic structure, in some cases thick enough to be harvestable as cork product without killing the tree.
761487
HI,\n\nAn antioxidant is a chemical that reduces the rate of particular oxidation reactions in a specific context, where oxidation reactions are chemical reactions that involve the transfer of electrons from a substance to an oxidising agent.\n\nAntioxidants are particularly important in the context of organic chemistry and biology. All living organisms maintain a reducing environment inside their cells, all cells contain complex systems of antioxidants to prevent chemical damage to the cells' components by oxidation. These antioxidants include glutathione and ascorbic acid and are substrates for enzymes such as peroxidases and oxidoreductases.\n\nA diet containing polyphenol antioxidants from plants is required for the health of most mammals, since plants are an important source of organic antioxidant chemicals. Antioxidants are widely used as ingredients in dietary supplements that are used for health purposes such as preventing cancer and heart disease. However, while many studies have suggested benefits for antioxidant supplements in laboratory experiments, several large clinical trials have failed to clearly demonstrate a benefit for the formulations tested, and excess supplementation may be harmful. It is logical to assume that a one dimensional approach to dietary supplementation with one specific antioxidant is not a panacea, since a broad diet rich in phytonutrients will yield thousands of different polyphenol antioxidants available for metabolism.\n\nRedgs,\n\nVenkat
769020
It sounds like an enzymatic assay for phosphatases. I did that myself a long time ago.\nIf I remember correctly 405 should be the wavelength at which you are measuring the absorbance, unless you mean that the value was 0.405\n\nYou need to make a standard curve: measure the absorbance for different samples of p-nitrophenol of known concentration (you prepare them yourself) and then do the plot absorbance vs concentration. You find the equation for the curve by linear regression and then you can use it to find out the concentration of p-nitrophenol in your samples. Be sure to have alkaline solutions in order to have practically all of the p-nitrophenyl molecules in the p-nitophenoxy form as the anionic form is yellow and the protonated colorless.\n\nThe exact math depend on the specifics of your experimental set-up.\n\nAs for the second question it is not very clear what you mean.
519677
Simple\nFirst Benzene is reacted with AlCl3 and chloroethane, performing the Friedel Crafts reaction.\nThen secondly, now youll be having a compound toluene (methyl benzene). Now start oxidsing it with say Potassium dichromate (any oxidising agent),toluene is oxidised to Benzyl alcohol (Ph-CH2OH), which is further oxidised to benzaldehyde(Ph-CHO), which can be further oxidised to Ph-COOH)----- Ph stands for phenyl group\n\nPlease make it the best answer
231671
Protein binding – if highly protein bound eg pheny – displaced, incr free drug\n\nHope this is what you're looking for.\n\n\nPhenyl &#92;Phe"nyl&#92;, n. [Gr. ? to bring to light + -yl: cf. F. ph['e]nyle. So called because it is a by-product of illuminating gas.]\n\n(Chem.) A hydrocarbon radical (C6H5) regarded as the essential residue of benzene, and the basis of an immense number of aromatic derivatives.\n\nPhenyl hydrate (Chem.), phenol or carbolic acid.\n\nPhenyl hydrazine (Chem.), a nitrogenous base (C6H5.N2H3) produced artificially as a colorless oil which unites with acids, ketones, etc., to form well-crystallized compounds.
744530
It is an electrophilic aromatic substitution reaction.  Because the -COO- acts as an electron withdrawing group to one phenyl group and a moderate electron donating group to the other pheny group the nitration will occur on the pheny group where the COO- is acting as an electron donating group.  The major product of the nitration will have the -NO2 in the para position because the ortho position is partially blocked by the large COPh group.\n\nI hope this helps!
225634
None. They are two different compounds.\n\nIt looks like you want to compare a specific property of the alcohols. Please specify!
44326
2,4,6- Trinitrophenol is unstable as a solid - it is shock sensative.  That is because having three nitrogroups on the aromatic ring is high in energy.  The instability is so great that bumping it or dropping it, etc. causes an explosion.  This reactivity is similar to that of 2,4,6-trinitrotoluene (commonly known as TNT or dynamite).