1.0 2011-09-21 00:29:01 UTC 2015-07-21 06:57:39 UTC FDB023379 19-Nor-5-androstenediol 19-Nor-5-androstenediol is an androgen steroid that has been found to be part of nutritional supplements that are commercialized as nandrolone-free. Some reports regarding nandrolone-positive cases have been related to intake of some of these supplements. Nandrolone is the most frequently abused substance in doping control because it does not convert to estrogens and does not have and androgenic side effects. For this reason, one the major metabolites of nandrolone, 19-norandrosterone (19-NA) have been used as determinants for doping of nandrolone. However, there are situations where the occurrence of nandrolone metabolites is a phenomenon not necessarily associated with doping: a) in human ovarian follicular fluid is a possible intermediate in the multistep enzymatic conversion of androgen to estrogen, b) during the course of pregnancy, 19-NA increases in urine, c) human chorionic gonadotropin (hCG) also stimulates 19-NA excretion in urine, d) exercise has been shown to affect the urinary excretion of nandrolone metabolites such as 19-NA, e) 19-NA is a minor metabolite of oral contraceptives such as norethisterone. Furthermore, 19-NA is the main urinary metabolite of 19-Nor-5-androstenediol. Nevertheless, the prevalence of nandrolone abuse is evident; internationally, 212 cases were found in 1995 and 232 cases were found in 1996. From 1998 to 2001, nandrolone-positive findings reported by the IOC-accredited laboratories ranged from 0.17% to 0.65%. (PMID: 15902981) [HMDB] (3b,17b)-Estr-5-ene-3,17-diol 19-Nor-5-androstene-3b,17b-diol D5-Estrene-3b,17b-diol Estr-5-ene-3b,17b-diol C18H28O2 276.4137 276.20893014 (1S,2R,5S,10R,11S,14S,15S)-15-methyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-ene-5,14-diol estr-5-ene-3b,17b-diol 25975-59-1 [H][C@@]12CC[C@H](O)[C@@]1(C)CC[C@]1([H])[C@@]3([H])CC[C@H](O)CC3=CC[C@@]21[H] InChI=1S/C18H28O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h2,12-17,19-20H,3-10H2,1H3/t12-,13-,14+,15+,16-,17-,18-/m0/s1 VVUQRXPUVKXAIO-XFUVECHXSA-N belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane. Estrogens and derivatives Organic compounds Lipids and lipid-like molecules Steroids and steroid derivatives Estrane steroids Aliphatic homopolycyclic compounds 17-hydroxysteroids 3-beta-hydroxy delta-5-steroids 3-beta-hydroxysteroids Cyclic alcohols and derivatives Delta-5-steroids Hydrocarbon derivatives Secondary alcohols 17-hydroxysteroid 3-beta-hydroxy-delta-5-steroid 3-beta-hydroxysteroid 3-hydroxy-delta-5-steroid 3-hydroxysteroid Alcohol Aliphatic homopolycyclic compound Cyclic alcohol Delta-5-steroid Estrogen-skeleton Hydrocarbon derivative Hydroxysteroid Organic oxygen compound Organooxygen compound Secondary alcohol C18 steroids (estrogens) and derivatives Solid logp 3.06 ALOGPS logs -3.63 ALOGPS solubility 6.45e-02 g/l ALOGPS logp 2.5 ChemAxon pka_strongest_acidic 18.23 ChemAxon pka_strongest_basic -0.77 ChemAxon iupac (1S,2R,5S,10R,11S,14S,15S)-15-methyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-ene-5,14-diol ChemAxon average_mass 276.4137 ChemAxon mono_mass 276.20893014 ChemAxon smiles [H][C@@]12CC[C@H](O)[C@@]1(C)CC[C@]1([H])[C@@]3([H])CC[C@H](O)CC3=CC[C@@]21[H] ChemAxon formula C18H28O2 ChemAxon inchi InChI=1S/C18H28O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h2,12-17,19-20H,3-10H2,1H3/t12-,13-,14+,15+,16-,17-,18-/m0/s1 ChemAxon inchikey VVUQRXPUVKXAIO-XFUVECHXSA-N ChemAxon polar_surface_area 40.46 ChemAxon refractivity 81.01 ChemAxon polarizability 33.34 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 2 ChemAxon donor_count 2 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::CMs 10447 Specdb::CMs 38767 Specdb::CMs 133211 Specdb::CMs 140945 Specdb::MsMs 247725 Specdb::MsMs 247726 Specdb::MsMs 247727 Specdb::MsMs 267666 Specdb::MsMs 267667 Specdb::MsMs 267668 Specdb::MsMs 2461717 Specdb::MsMs 2461718 Specdb::MsMs 2461719 Specdb::MsMs 2477816 Specdb::MsMs 2477817 Specdb::MsMs 2477818 HMDB04590 #<Reference:0x000055ce31cba908> Anatidae Type 1 specific Anatidae 8830 Beefalo Type 1 specific Bos taurus X Bison bison 297284 Bison Type 1 specific Bison bison 9901 Buffalo Type 1 specific Bubalus bubalis 89462 Cattle (Beef, Veal) Type 1 specific Bos taurus 9913 Chicken Type 1 specific Gallus gallus 9031 Columbidae (Dove, Pigeon) Type 1 specific Columbidae 8930 Deer Type 1 specific Cervidae 9850 Domestic goat Type 1 specific Capra aegagrus hircus 9925 Domestic pig Type 1 specific Sus scrofa domestica 9825 Elk Type 1 specific Cervus canadensis 1574408 Emu Type 1 specific Dromaius novaehollandiae 8790 European rabbit Type 1 specific Oryctolagus 9984 Greylag goose Type 1 specific Anser anser 8843 Guinea hen Type 1 specific Numida meleagris 8996 Horse Type 1 specific Equus caballus 9796 Mallard duck Type 1 specific Anas platyrhynchos 8839 Mountain hare Type 1 specific Lepus timidus 62621 Mule deer Type 1 specific Odocoileus 9871 Ostrich Type 1 specific Struthio camelus 8801 Pheasant Type 1 specific Phasianus colchicus 9054 Quail Type 1 specific Phasianidae 9005 Rabbit Type 1 specific Leporidae 9979 Rock ptarmigan Type 1 specific Lagopus muta 64668 Sheep (Mutton, Lamb) Type 1 specific Ovis aries 9940 Squab Type 1 specific Columba 8931 Turkey Type 1 specific Meleagris gallopavo 9103 Velvet duck Type 1 specific Melanitta fusca 371864 Wild boar Type 1 specific Sus scrofa 9823