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(1) Unlike caffeine, these molecules have only two methyl groups attached to their xanthine skeleton.

(2) A methyl group is a carbon with three hydrogen atoms attached.

(3) The methyl group carbon atom has 6 valence electrons from its bonds to the hydrogen atoms because carbon is more electronegative than hydrogen.

(4) Trigonelline is unstable above 160 degrees F; the methyl group detaches, unleashing the niacin—vitamin B3—into your cup.

(5) The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.

(6) Conclusion Introducing the methyl group or a low alkyl group resulting in the high selectivity and increase of its activity.

(7) A methyl group is a basic unit in organic chemistry: one carbon atom attached to three hydrogen atoms.

(8) In healthy cells a compound called a methyl group is tagged to DNA where it acts as a "red light", preventing certain genes from producing proteins.

(9) Substitution of methyl group at 1,2 and 3 position on 1-methylindole, 2-methylindole and 3-methylindole inhibits initial microbial attack significantly.

(10) The methyl group (CH3) attached to the methionine sulfur atom in SAM is chemically reactive.

(11) They differ only in the position of one of the methyl groups.

(12) Thymine: Organic compound of the pyrimidine family, often called a Base, consisting of a ring containing Both nitrogen and carbon atoms, and a methyl group.

(13) The acid catalytic process is another way to produce bio-diesel, which has the advantage of fast reaction rate and high conversion ratio for the esterification of methyl group in free fatty acid.

(14) Genes get switched off when a chemical mark, a methyl group, is added to the DNA.

(15) Any time you see a c h 3, this means a methyl group.

(16) Darwin taught us that it takes many generations for a genome to evolve, but researchers have found that it takes only the addition of a methyl group to change an epigenome.

(17) Much is known about the "fifth base, " 5-methylcytosine(Sentencedict.com ), which arises when a chemical tag or methyl group is tacked onto a cytosine.

(18) The chemical properties of bromomethyl quaternary ammonium salts are changed drastically when compared with the methyl group counterpart.

(19) DCA, or dichloroacetic acid, is an analogue of acetic acid in which chlorine atoms replace two of the three hydrogen atoms on the methyl group.

(20) Pimaric-type resin acid is a kind of important resin acid with a special structure, in which there are both a methyl group and a vinyl group at C(subscript -13) position.

(21) It may be synthesized directly from ammonia, carbon dioxide, and a donated methyl group; derived from serine; or derived from glycerate 3-phosphate by TRANSAMINATION of glyoxylate.