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4-Androstene-3,6,17-trione (4-AT; also marketed as 6-OXO or 4-etioallocholen-3,6,17-trione) is a drug or nutritional supplement that may increase the testosterone-estrogen ratio, but has no proven effect on body composition. Its use can be detected in urine.
In enzymology, a 3-oxosteroid 1-dehydrogenase (EC 1.3.99.4) is an enzyme that catalyzes the chemical reaction. a 3-oxosteroid + acceptor a 3-oxo-Delta 1-steroid + reduced acceptor. Thus, the two substrates of this enzyme are 3-oxosteroid and acceptor, whereas its two products are 3-oxo-Delta1-steroid and reduced acceptor.
A ketosteroid, or an oxosteroid, is a steroid in which a hydrogen atom has been replaced with a ketone (C=O) group.. A 17-ketosteroid is a ketosteroid in which the ketone is located specifically at the C17 position (in the upper right corner of most structure diagrams).
a 3-oxo-5α-steroid + acceptor ⇌ a 3-oxo-Δ 4-steroid + reduced acceptor. Where a 3-oxo-5α-steroid and acceptor are substrates, and a corresponding 3-oxo-Δ4-steroid and the reduced acceptor are products. An instance of this generalized reaction that 5α-reductase type 2 catalyzes is:
Fluorexetamine (3'-Fluoro-2-oxo-PCE, 3-FXE) is a recreational designer drug from the arylcyclohexylamine family, with dissociative effects. It has reportedly been sold over the internet since around 2017, though has remained relatively uncommon.
CF 3 C(O)CH 2 CO 2 H → CF 3 C(O)CH 3 + CO 2. It is a weak acid (like most alkyl carboxylic acids), with a pK a of 3.58. Acetoacetic acid displays keto-enol tautomerisation, with the enol form being partially stabilised by extended conjugation and intramolecular H-bonding. The equilibrium is strongly solvent depended; with the keto form ...
Diethyl oxomalonate is the diethyl ester of mesoxalic acid (ketomalonic acid), the simplest oxodicarboxylic acid and thus the first member (n = 0) of a homologous series HOOC–CO–(CH 2) n –COOH with the higher homologues oxalacetic acid (n = 1), α-ketoglutaric acid (n = 2) and α-ketoadipic acid (n = 3) (the latter a metabolite of the amino acid lysine).
Hydroformylation of an alkene (R 1 to R 3 organyl groups (i. e. alkyl-or aryl group) or hydrogen). In organic chemistry, hydroformylation, also known as oxo synthesis or oxo process, is an industrial process for the production of aldehydes (R−CH=O) from alkenes (R 2 C=CR 2).