Helenin information

Helenin
	; Alantolactone
	; Isoalantolactone
Names
	IUPAC names Alantolactone: (3aR,5S,8aR,9aR)-5,8a-Dimethyl-3-methylene-3a,5,6,7,8,8a,9,9a-octahydronaphtho[2,3-b]furan-2(3H)-one; Isoalantolactone: (3aR,4aS,8aR,9aR)-8a-Methyl-3,5-bis(methylene)decahydronaphtho[2,3-b]furan-2(3H)-one
	Other names Elecampane camphor, Inula camphor, Alant camphor
Identifiers
CAS Number	Alantolactone: 546-43-0 ; isolantolactone: 470-17-7 ;
3D model (JSmol)	Alantolactone: Interactive image; isolantolactone: Interactive image;
ChEBI	Alantolactone: CHEBI:2540; isolantolactone: CHEBI:5981;
ChEMBL	Alantolactone: ChEMBL136356; isolantolactone: ChEMBL137803;
ChemSpider	Alantolactone: 65564; isolantolactone: 66028;
EC Number	Alantolactone: 208-899-3;
KEGG	Alantolactone: C09289; isolantolactone: C09484;
PubChem CID	Alantolactone: 72724; isolantolactone: 73285;
UNII	Alantolactone: M7GSN5Q1M6 ; isolantolactone: BYH07P620U ;
	InChI InChI=1S/C15H20O2/c1-9-5-4-6-15(3)8-13-11(7-12(9)15)10(2)14(16)17-13/h7,9,11,13H,2,4-6,8H2,1,3H3/t9-,11+,13+,15+/m0/s1 Key: PXOYOCNNSUAQNS-AGNJHWRGSA-N; isolantolactone: InChI=1S/C15H20O2/c1-9-5-4-6-15(3)8-13-11(7-12(9)15)10(2)14(16)17-13/h11-13H,1-2,4-8H2,3H3/t11-,12+,13-,15-/m1/s1 Key: CVUANYCQTOGILD-QVHKTLOISA-N;
	SMILES Alantolactone: C[C@H]1CCC[C@]2(C1=C[C@H]3[C@@H](C2)OC(=O)C3=C)C; isolantolactone: C[C@]12CCCC(=C)[C@@H]1C[C@H]3[C@@H](C2)OC(=O)C3=C;
Properties
Chemical formula	C15H20O2
Molar mass	232.323 g·mol−1
Appearance	Crystalline powder
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Helenin is a phytochemical mixture found in many plant species, including the Inula helenium (elecampane) of the family Asteraceae. It is a mixture of two isomeric sesquiterpene lactones, alantolactone and isoalantolactone.

In 1895 the German scientists Julius Bredt and Wilhelm Posh extracted helenin from Inula helenium and determined its physical and chemical properties.^[1]

^ Chemical Society (Great Britain) (1895). The collected works of Sir Humphry Davy ...: Discourses delivered before the Royal society. Elements of agricultural chemistry, pt. I. Smith, elder and Company. p. 555. Retrieved 31 July 2015.

[Britain)Davy1895-1] Chemical Society (Great Britain) (1895). The collected works of Sir Humphry Davy ...: Discourses delivered before the Royal society. Elements of agricultural chemistry, pt. I. Smith, elder and Company. p. 555. Retrieved 31 July 2015.

Helenin information

and 5 Related for: Helenin information

Helenin

Elecampane

Jihlava

C15H20O2

Iglau language island

Names
Alantolactone
Isoalantolactone
IUPAC names Alantolactone: (3aR,5S,8aR,9aR)-5,8a-Dimethyl-3-methylene-3a,5,6,7,8,8a,9,9a-octahydronaphtho[2,3-b]furan-2(3H)-one Isoalantolactone: (3aR,4aS,8aR,9aR)-8a-Methyl-3,5-bis(methylene)decahydronaphtho[2,3-b]furan-2(3H)-one
Other names Elecampane camphor, Inula camphor, Alant camphor
Identifiers
CAS Number	Alantolactone: 546-43-0^Y isolantolactone: 470-17-7^Y
3D model (JSmol)	Alantolactone: Interactive image isolantolactone: Interactive image
ChEBI	Alantolactone: CHEBI:2540 isolantolactone: CHEBI:5981
ChEMBL	Alantolactone: ChEMBL136356 isolantolactone: ChEMBL137803
ChemSpider	Alantolactone: 65564 isolantolactone: 66028
EC Number	Alantolactone: 208-899-3
KEGG	Alantolactone: C09289 isolantolactone: C09484
PubChem CID	Alantolactone: 72724 isolantolactone: 73285
UNII	Alantolactone: M7GSN5Q1M6^Y isolantolactone: BYH07P620U^Y
InChI InChI=1S/C15H20O2/c1-9-5-4-6-15(3)8-13-11(7-12(9)15)10(2)14(16)17-13/h7,9,11,13H,2,4-6,8H2,1,3H3/t9-,11+,13+,15+/m0/s1 Key: PXOYOCNNSUAQNS-AGNJHWRGSA-N isolantolactone: InChI=1S/C15H20O2/c1-9-5-4-6-15(3)8-13-11(7-12(9)15)10(2)14(16)17-13/h11-13H,1-2,4-8H2,3H3/t11-,12+,13-,15-/m1/s1 Key: CVUANYCQTOGILD-QVHKTLOISA-N
SMILES Alantolactone: C[C@H]1CCC[C@]2(C1=C[C@H]3[C@@H](C2)OC(=O)C3=C)C isolantolactone: C[C@]12CCCC(=C)[C@@H]1C[C@H]3[C@@H](C2)OC(=O)C3=C
Properties
Chemical formula	C₁₅H₂₀O₂
Molar mass	232.323 g·mol⁻¹
Appearance	Crystalline powder
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references