androsterone

The result did not stand, however, as Sun failed a drugs test for androsterone.

Androsterone has been shown to naturally occur in pine pollen and is well known in many animal species.

A former training partner confessed in court to spiking her drink with androsterone, but she still received a two-year ban from the sport.

Dr. Ruzicka then demonstrated that cholesterol could be transformed into the male hormone androsterone.

Androsterone is often advertised as influencing human behavior, but there is little data to substantiate its use as a pheromone.

Starting point for the Robinson synthesis was 1,6-dihydroxynaphthalene 1 that was converted in about 20 steps into the then already known androsterone 4.

The smell chemicals androstenol and androsterone are produced in our saliva, and also in that of pigs.

Testosterone is about ten times as active as androsterone; that is, it will produce equivalent effects in one-tenth the dose.

Some state that it contains anti-bacterial enzymes such as lysozyme and hormones such as androsterone, though others dispute this.

Her two-year ban was upheld despite a civil court ruling that another athlete, Yu Haijiang, had spiked her drink with androsterone.

The eighteen-carbon (C18) steroids include the estrogen family whereas the C19 steroids comprise the androgens such as testosterone and androsterone.

As f at back as the 1960's two chemicals, copulin and androsterone, were found to be sexual signals in monkeys, and to some extent in human beings.

The molecule of estrone, for instance, differs from that of androsterone only in the presence of three double bonds and in the absence of carbon-ig.

Two years later, working with another chemist, Dr. Butenandt isolated androsterone, a male hormone, by obtaining 15 milligrams of crystalline substance from 3,960 gallons of male urine.

Androsterone is a chemical byproduct created during the breakdown of androgens, or derived from progesterone, that also exerts minor masculinising effects, but with one-seventh the intensity of testosterone.

Fleiss et al. (1998) report the inner mucosa contains apocrine glands, which secrete cathepsin B, lysozyme, chymotrypsin, neutrophil elastase, and hormones such as androsterone.

Ruzicka had already demonstrated in 1938 that androsterone could be converted into androstenedione 5 and Robinson demonstrated its conversion to dehydroepiandrosterone 6 (note the epimerized hydroxyl group) also already a known compound.

Although men secrete the pheromone androsterone from their underarm glands, 50 to 60 per cent of males cannot even smell such musky odours - which rather damages the claims that women's musk-based perfumes drive men wild.

They distilled over 17,000 litres of male urine, from which they got 50 milligrams of crystalline androsterone (most likely mixed isomers), which was sufficient to find that the chemical formula was very similar to estrone.

It has been demonstrated that bovine milk XO activity is stimulated by androsterone and testosterone and inhibited by the estrogens (beta-esradiol, 17 alpha-estradiol, estrone and estriol) and progesterone.

The 3 substrates of this enzyme are androsterone, NAD, and NADP, whereas its 4 products are 5alpha-androstane-3,17-dione, NADH, NADPH, and H.