The Tencent App Store for Android (see #1 on the list) is the newest alternative, Chinese-made Android app store. 1  GoMarket / GoAPK grew out of its riotously popular BBS, where users share free and pirated apps. 2  N-Duo Market / Nduoa had been graced in the past with backing from Shanda, but that has fizzled out.
Alpha hydroxy is a familiar name to those seeking youthful skin; it is one in a long line of wonder ingredients in cosmetics and skin care products. It is an entire family of acids that can be derived from fruit, milk or sugar. The most widely used in skin care is glycolic acid (made from sugar) and lactic acid (made from milk).
ADDITION & CONDENSATION. The Aldol addition reaction involves the addition of Î±-carbon of an enolizable aldehyde or ketone to the carbonyl group of another aldehyde or ketone and thus by giving a Î²-hydroxy carbonyl compound also known as an aldol (indicating both aldehyde and alcohol groups). The first step in base catalyzed aldol reaction is the abstraction of an Î±-hydrogen from the enolizable carbonyl compound to give a resonance stabilized enolate anion. Usually this step is slow and rate determining. Note: Usually hydroxide ion is used as a base, since it is less basic than the enolate ion.