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Clicks Retail Group is a group of healthcare, beauty, music and lifestyle products retail chains and brands based in South Africa, including Clicks pharmacies. The company was founded in Cape Town by Jack Goldin in 1968 and operates over 670 retail outlets in southern Africa . [ 1 ]
Acetone and acetic anhydride ((CH 3 C(O)) 2 O) upon the addition of boron trifluoride (BF 3) catalyst: [11] (CH 3 C(O)) 2 O + CH 3 C(O)CH 3 → CH 3 C(O)CH 2 C(O)CH 3 A second synthesis involves the base-catalyzed condensation (e.g., by sodium ethoxide CH 3 CH 2 O − Na + ) of acetone and ethyl acetate , followed by acidification of the sodium ...
In the US, dimethyl carbonate was exempted under the definition of volatile organic compounds (VOCs) by the U.S. EPA in 2009. [9] Due to its classification as VOC exempt, dimethyl carbonate has grown in popularity and applications as a replacement for methyl ethyl ketone (MEK) and other solvents.
Nigeria's health regulator is recalling a batch of Johnson & Johnson children's cough syrup after finding an unacceptably high level of a potentially fatal toxic substance, it said on Wednesday.
At laboratory scale, MIBK can be produced via a three-step process using acetone as the starting material. Self-condensation, a type of aldol reaction, produces diacetone alcohol, [3] which readily dehydrates to give 4-methylpent-3-en-2-one (commonly, mesityl oxide). [4] Mesityl oxide is then hydrogenated to give MIBK. [5]
Acetoin is a neutral, four-carbon molecule used as an external energy store by a number of fermentative bacteria. It is produced by the decarboxylation of alpha-acetolactate, a common precursor in the biosynthesis of branched-chain amino acids.
Markets in Lagos, Nigeria, offer a broad and diverse range of new, second-hand goods, products and merchandise for consumers. Notable markets in Lagos include: This list is incomplete ; you can help by adding missing items .
Nigeria National Petroleum: Oil and gas 9,706 1,877 2 Nigeria Liquefied Natural Gas: Oil and gas 6,315 ... 3 MTN Nigeria: Telecommunications 3,514 536 4 Dangote Cement: Cement 2,699 721 5 Nigerian Petroleum Development: Oil and gas 2,686 219 6 Flour Mills of Nigeria: Agroindustry 2,014 67 7 Airtel Nigeria: Telecommunications 1,503 343 8 ...