n
(organic chemistry) The N-acetyl derivative of serotonin; it is an intermediate in the biosynthesis of melatonin from serotonin
n
(biochemistry) An acetyl derivative of spermidine
n
(biochemistry) An oxidation product of uric acid, 2,4,5,6(1H,3H)-pyrimidinetetrone, capable of inducing diabetes by destroying pancreatic tissue
n
(organic chemistry, medicine) An amino derivative of guanidine, used for the treatment of diabetic nephropathy under the name pimagedine
n
(organic chemistry) Any amino derivative of a purine
n
(biochemistry) An intermediate, 5,10-methenyltetrahydrofolate, in the interconversion of glycine and serine that is catalysed by folic acid
n
(organic chemistry) Any bacterial pheophorbide
n
(organic chemistry) The amino acid (2S)-2-(3-aminopropanoylamino)-3-(1-methylimidazol-4-yl)propanoic acid
n
Synonym of bongkrek acid
n
(organic chemistry, medicine) An amino acid whose sulfoximine is used in chemotherapy
adj
(organic chemistry) Relating to cannabigerolic acid or its derivatives
n
(organic chemistry) Synonym of guanidine
n
(organic chemistry) Any chloro derivative of adenosine; 8-chloroadenosine has antineoplastic activity.
n
(organic chemistry) Any of a group of derivatives of cholestanes that have a double bond
n
(biochemistry) The coenzyme Q found in humans with 10 isoprene units on the side chain.
n
(organic chemistry) A white amorphous substance, regarded as a polymeric modification of isocyanic acid.
n
(organic chemistry) Any cyano derivative of acetaldehyde
n
(organic chemistry) The cyano derivative of guanidine NH₂-C(=NH)-NH-CN
n
(organic chemistry) Any of several classes of lipid that contain a nitrile (cyanide) group
n
(organic chemistry) A liquid organic base, C₁₀H₁₃.NH₂, derived from cymene.
n
Alternative form of cystathionine [(biochemistry) An intermediate, 2-amino-4-(2-amino-2-carboxy-ethyl) thio-butanoic acid, in the biosynthesis of cysteine.]
n
(organic chemistry) A fluorescent amino acid conjugate N-{[5-(dimethylamino)-1-naphthyl]sulfonyl}glycine
n
(organic chemistry) The imino acid iminoacetic acid HN=CH-CO₂H
n
(biochemistry) Either of two enantiomers of a derivative of the amino acid tyrosine.
n
alternative form of E214.
n
Abbreviation of formiminoglutamic acid. [(biochemistry) An intermediate in the metabolism of histidine. (See biomarker applications at formiminoglutamate.)]
n
(organic chemistry, especially in combination) A univalent radical derived from fluorescein
n
(organic chemistry) Any fluoro derivative of adenosine
n
(organic chemistry, biochemistry) A fluoro- derivative of citrate that is a metabolite of fluoroacetate and is responsible for fluoroacetate poisoning
n
A form of dextran impregnated with fluorescein
n
(organic chemistry) Any fluoro derivative of uridine, but especially 5-fluorouridine, a metabolite of 5-fluorouracil, derivatives of which have anticancer activity
n
(biochemistry, organic chemistry) A polycyclic heterocyclic carboxylic acid, one of the vitamin B complex, essential for cell growth and reproduction
n
(biochemistry) Any univalent radical derived from a furanose
n
(chemistry, pharmacology) The lactone of 4-hydroxybutyric acid; A colourless liquid used as a solvent or reagent in various industrial uses, as well as a recreational drug. Abbreviated to GBL.
n
(organic chemistry) The univalent radical derived from glutamine.
n
(biochemistry) A nonessential amino acid, amino-acetic acid, C₂H₅NO₂ found in most proteins but especially in sugar cane; the simplest amino acid.
n
(organic chemistry) A strong base HN=C(NH₂)₂ obtained by the oxidation of guanine
n
(organic chemistry) The cation derived from guanidine.
n
(chemistry) A substance first obtained from guano; it is a nucleic base and pairs with cytosine in DNA and RNA (by means of three hydrogen bonds).
n
(biochemistry) An amino acid consisting of two homoalanine residues connected by a single sulfur atom
n
(organic chemistry) Any lactone that has a free hydroxy group
n
(organic chemistry) Any of several isomeric hydroxy derivatives of leucine
n
(organic chemistry) Any hydroxy derivative of a lipid
n
(organic chemistry) A hydroxy derivative of lysine.
n
Hydroxypropyl methylcellulose, a semisynthetic, inert, viscoelastic polymer used as a food additive, an excipient in oral medicaments, and an ophthalmic lubricant.
n
(organic chemistry) Any lactone that also contains an imino group
n
(organic chemistry) An imino derivative of ribitol.
adj
Of or pertaining to isonicotine
n
A chemical compound, beta-ethoxy-alpha-ketobutyraldehyde.
n
(biochemistry) An analogue of cystine consisting of two alanine residues connected by a single sulfur atom
n
(organic chemistry) The aldehyde formed by reduction of the carboxylic acid group of leucine; any of its derivatives.
n
(organic chemistry) Any derivative of a hexosylceramide in which an acyl group has been removed by hydrolysis
n
(organic chemistry, oncology) Synonym of medronate
n
Synonym of dimethylnitrosamine
n
(organic chemistry) An N-nitroso derivative of guanidine whose methyl derivative is used as a mutagen
n
(organic chemistry) The amide O=C(NH₂)₂ formally derived from guanidine by replacing an >NH group with one of >O
n
Alternative form of oxythiamine [The thiamine antagonist cation 5-(2-hydroxyethyl)-3-(4-hydroxy-2-methyl-5-pyrimidinylmethyl)-4-methylthiazolium]
n
(organic chemistry) Para-aminobenzoic acid, a member of the B-complex family of vitamins that can be synthesized by the human body from folic acid. It is used primarily as an active ingredient in sunscreen, but also is necessary for some intestinal bacteria.
n
(organic chemistry) Either of two organic compounds related to PABA and used in sunscreen: padimate A and padimate O.
n
Alternative form of palmitin [(organic chemistry) A glyceride of palmitic acid]
n
(biochemistry) The cysteamine amide analogue of pantothenic acid, an intermediate in the production of coenzyme A by the body.
n
(chemistry) A dimeric form of pantothenic acid, composed of two molecules of pantothenic acid linked by cysteamine bridging groups.
n
(organic chemistry) An alcohol derived from pantothenic acid. It is a more stable form of the vitamin and often used in multivitamin supplements.
n
(organic chemistry) A dicarboxylic acid, HO₂C(CH₂)₅CO₂H, whose derivatives are involved in the biosynthesis of lysine.
n
(organic chemistry) isourea
n
(organic chemistry) A diazine in which the two nitrogen atoms are in the meta- positions; it is the basis of three of the bases found in DNA and RNA: thymine, uracil and cytosine
n
(biochemistry, especially in combination) A univalent radical derived from a ribonucleotide
n
(organic chemistry) The cyclic imide of succinic acid.
n
(organic chemistry) The pyranose form of talose
n
(historical) A material derived from nitrocellulose, used in making filaments for lamps.
n
(organic chemistry, biochemistry) An amino-sulfonic acid, NH₂CH₂CH₂SO₃H, that has regulatory functions in mammals.
n
(organic chemistry) A toxic analog of the amino acid lysine, S-aminoethyl-L-cysteine
n
threonine (an essential amino acid)
n
(organic chemistry) Any tosyl derivative of a nucleoside
n
The L-enantiomer of ascorbic acid, a water-soluble nutrient essential for life, synthesized by most animals and plants but not humans, although used in our bodies for many purposes. It is plentiful in citrus fruits and many vegetables, and a deficiency causes scurvy.
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