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A form of government where the monarch is elected, a modern example being the King of Cambodia, who is chosen by the Royal Council of the Throne; Vatican City is also often considered a modern elective monarchy. Self-proclaimed monarchy: A form of government where the monarch claims a monarch title without a nexus to the previous monarch dynasty.
Binary offset carrier modulation [1] [2] (BOC modulation) was developed by John Betz in order to allow interoperability of satellite navigation systems. It is currently used in the US GPS system, Indian IRNSS system and in Galileo [3] and is a square sub-carrier modulation, where a signal is multiplied by a rectangular sub-carrier of frequency ...
The Philippine Health Insurance Corporation ( PhilHealth) was created in 1995 to implement universal health coverage in the Philippines. It is a tax-exempt, government-owned and controlled corporation (GOCC) of the Philippines, and is attached to the Department of Health. On August 4, 1969, Republic Act 6111 or the Philippine Medical Care Act ...
1-Boc-4-AP. 1-Boc-4-AP ( tert-butyl 4- (phenylamino)piperidine-1-carboxylate) is a compound used as an intermediate in the manufacture of fentanyl, as well as various related derivatives such as butyrylfentanyl, furanylfentanyl, benzylfentanyl and homofentanyl, among others. It is an N-protected derivative of 4-anilinopiperidine which can be ...
The tert-butyloxycarbonyl protecting group or tert-butoxycarbonyl protecting group [1] ( BOC group) is an acid -labile protecting group used in organic synthesis . The BOC group can be added to amines under aqueous conditions using di- tert -butyl dicarbonate in the presence of a base such as sodium hydroxide :
Di-tert-butyl dicarbonate is a reagent widely used in organic synthesis. [ 1] Since this compound can be regarded formally as the acid anhydride derived from a tert -butoxycarbonyl (Boc) group, it is commonly referred to as Boc anhydride. This pyrocarbonate reacts with amines to give N - tert -butoxycarbonyl or so-called Boc derivatives.
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Peptide synthesis. Coupling of two amino acids in solution. The unprotected amine of one reacts with the unprotected carboxylic acid group of the other to form a peptide bond. In this example, the second reactive group (amine/acid) in each of the starting materials bears a protecting group. In organic chemistry, peptide synthesis is the ...