1.0 2010-04-08 22:11:58 UTC 2019-11-26 03:11:58 UTC FDB015642 Steviol Isolated from Cucurbita maxima Rebaudioside B, D, and E may also be present in minute quantities; however, it is suspected that rebaudioside B is a byproduct of the isolation technique. The two majority compounds stevioside and rebaudioside, primarily responsible for the sweet taste of stevia leaves, were first isolated by two French chemists in 1931. Steviol is found in fruits and japanese pumpkin. (-)-Steviol 13-Hydroxy-kaur-16-en-18-Oic acid Hydroxydehydrostevic acid Kaur-16-en-18-oic acid, 13-hydroxy- Kaur-16-en-18-oic acid, 13-hydroxy-, (4&alpha;)- Steviol C20H30O3 318.4504 318.219494826 13-hydroxy-5,9-dimethyl-14-methylidenetetracyclo[11.2.1.0¹,¹⁰.0⁴,⁹]hexadecane-5-carboxylic acid steviol 471-80-7 CC12CCCC(C)(C1CCC13CC(=C)C(O)(C1)CCC23)C(O)=O InChI=1S/C20H30O3/c1-13-11-19-9-5-14-17(2,7-4-8-18(14,3)16(21)22)15(19)6-10-20(13,23)12-19/h14-15,23H,1,4-12H2,2-3H3,(H,21,22) QFVOYBUQQBFCRH-UHFFFAOYSA-N belongs to the class of organic compounds known as kaurane diterpenoids. These are diterpene alkaloids with a structure that is based on the kaurane skeleton. Kaurane is a tetracyclic compound that arises by cyclisation of a pimarane precursor followed by rearrangement. It possesses a [3,2,1]-bicyclic ring system with C15-C16 bridge connected to C13, forming the five-membered ring D. Kaurane diterpenoids Organic compounds Lipids and lipid-like molecules Prenol lipids Diterpenoids Aliphatic homopolycyclic compounds Carbonyl compounds Carboxylic acids Cyclic alcohols and derivatives Hydrocarbon derivatives Monocarboxylic acids and derivatives Organic oxides Tertiary alcohols Alcohol Aliphatic homopolycyclic compound Carbonyl group Carboxylic acid Carboxylic acid derivative Cyclic alcohol Hydrocarbon derivative Kaurane diterpenoid Monocarboxylic acid or derivatives Organic oxide Organic oxygen compound Organooxygen compound Tertiary alcohol logp 3.18 ALOGPS logs -4.31 ALOGPS solubility 1.58e-02 g/l ALOGPS melting_point Mp 215° logp 3.65 ChemAxon pka_strongest_acidic 4.7 ChemAxon pka_strongest_basic -0.92 ChemAxon iupac 13-hydroxy-5,9-dimethyl-14-methylidenetetracyclo[11.2.1.0¹,¹⁰.0⁴,⁹]hexadecane-5-carboxylic acid ChemAxon average_mass 318.4504 ChemAxon mono_mass 318.219494826 ChemAxon smiles CC12CCCC(C)(C1CCC13CC(=C)C(O)(C1)CCC23)C(O)=O ChemAxon formula C20H30O3 ChemAxon inchi InChI=1S/C20H30O3/c1-13-11-19-9-5-14-17(2,7-4-8-18(14,3)16(21)22)15(19)6-10-20(13,23)12-19/h14-15,23H,1,4-12H2,2-3H3,(H,21,22) ChemAxon inchikey QFVOYBUQQBFCRH-UHFFFAOYSA-N ChemAxon polar_surface_area 57.53 ChemAxon refractivity 88.89 ChemAxon polarizability 36.34 ChemAxon rotatable_bond_count 1 ChemAxon acceptor_count 3 ChemAxon donor_count 2 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::CMs 13525 Specdb::CMs 44989 Specdb::CMs 155057 Specdb::MsMs 10802 Specdb::MsMs 10803 Specdb::MsMs 10804 Specdb::MsMs 17474 Specdb::MsMs 17475 Specdb::MsMs 17476 Specdb::MsMs 2658607 Specdb::MsMs 2658608 Specdb::MsMs 2658609 Specdb::MsMs 3050579 Specdb::MsMs 3050580 Specdb::MsMs 3050581 HMDB36706 #<Reference:0x000055ce318aaf48> Fruits Unknown generic Japanese pumpkin Type 1 specific Cucurbita maxima 3661