Lauoryl chloride used in the preparation of ketonic
compounds, ester and high molecular weight alkyl radical etc..
GO can be regarded as a graphene sheet containing various oxygenated functional groups such as hydroxyl, ketonic
, carboxyl, epoxide, peroxide, anhydride, and ether.
1b shows FT-IR spectrum of PABTBA with absorption peaks at 1170 cm-1, 1678 cm-1 and 1725 cm-1 correspondingly to C=S bonds and carbonyl functionalities for both ketonic
and ester bonding.
Hydrocortisone has a broad O-H intermolecular hydrogen bonded peak at 3420 [cm.sup.-1], weak olefinic or aromatic H-C= stretch at 3015 [cm.sup.-1], merge C-H stretch at 2917 [cm.sup.-1], five-member ring ketonic
stretch at 1720 [cm.sup.-1], six-member ring ketonic
and enolic carbonyl stretch at 1665 [cm.sup.-1], C[H.sub.2] attached to ketonic
of olefinic scissoring bend at 1433 [cm.sup.-1], C[H.sub.2]CO scissoring vibration at 1408 [cm.sup.-1] , and the fingerprint region which is distinct to every steroid.
The dominant features of the C k-edge spectra include: (1) quinone and diene C at 284.5 eV, (2) aryl and olefinic C at 285.2 eV, (3) unsaturated C at 286.1 eV, (4) phenolic (aromatic C connected to O group (COH) in phenols) and ketonic
C (carbonyl substituted aromatic structures of quinones, phenols and ketones) at 286.7 eV, (5) aliphatic and carbonyl C (carbonyl functionalities from aromatic ketones) at 287.7 eV, (6) carboxylic C, carbonyl C in carboxylic acids, aromatic alcohols and polysaccharide structures at 288.4 eV, (7) O-alkyl C (e.g.
extract was filtered using paperand with successive additions of acetone for complete removal of the pigments, being the volume filled to 25 mL with the same extractor.
These algae also contain some minor carotenoids among which canthaxanthin and astaxanthin, both with ketonic
groups; stand out (Whittle and Casselton, 1975; Karlson et al., 1996).
The physicochemical changes which occur during photooxidative reactions are characterized by an increase in the concentration of the oxygen-containing groups such as peroxides, hydroperoxides, and ketonic
carbonyl groups .
Meanwhile the essential oil from the same species growing in Jenin region had almost different components: the total essential oil represented 92.58% and the major represented class of phytoconstituents was ketonic
products with 89.81% of total identified essential oil components.
): One milliliter of 2, 4-dinitrophenylhydrazine solutions (0.5 g dissolved in 100 ml of 2M HC1) was added to 2 ml aqueous solution of the extract.
(8) Other related factor is the development of metabolic acidosis caused by a high production of ketonic
bodies resulting from protein and lipid metabolism.
Nalmefene has a methylene radical (C=CH2) substituted by a ketonic
group (C=O) in position 6 with respect to naltrexone, and in comparison with naltrexone it has greater bioavailability (40-50%), a longer half life and greater affinity for delta and kappa opioid receptors.