Amyrin

Amyrins

α-Amyrin
β-Amyrin
Names
IUPAC names α: (3β)-Urs-12-en-3-ol β: (3β)-Olean-12-en-3-ol
Other names α: α-Amyrenol; α-Amirin; α-Amyrine; Urs-12-en-3β-ol; Viminalol β: β-Amyrenol; β-Amirin; β-Amyrine; Olean-12-en-3β-ol; 3β-Hydroxyolean-12-ene
Identifiers
CAS Registry Number	638-95-9 (α) Y 559-70-6 (β) Y
ChemSpider	65935 (α) 65921 (β)
InChI InChI=1S/C30H50O/c1-19-11-14-27(5)17-18-29(7)21(25(27)20(19)2)9-10-23-28(6)15-13-24(31)26(3,4)22(28)12-16-30(23,29)8/h9,19-20,22-25,31H,10-18H2,1-8H3/t19-,20+,22+,23-,24+,25+,27-,28+,29-,30-/m1/s1 (α) Key: FSLPMRQHCOLESF-SFMCKYFRSA-N InChI=1/C30H50O/c1-19-11-14-27(5)17-18-29(7)21(25(27)20(19)2)9-10-23-28(6)15-13-24(31)26(3,4)22(28)12-16-30(23,29)8/h9,19-20,22-25,31H,10-18H2,1-8H3/t19-,20+,22+,23-,24+,25+,27-,28+,29-,30-/m1/s1 (α) Key: FSLPMRQHCOLESF-SFMCKYFRBG InChI=1/C30H50O/c1-25(2)15-16-27(5)17-18-29(7)20(21(27)19-25)9-10-23-28(6)13-12-24(31)26(3,4)22(28)11-14-30(23,29)8/h9,21-24,31H,10-19H2,1-8H3/t21-,22-,23+,24-,27+,28-,29+,30+/m0/s1 (β) Key: JFSHUTJDVKUMTJ-QHPUVITPBE
Jmol-3D images	Image (α) Image (β)
PubChem	73170 (α) 73145 (β)
SMILES O[C@H]2CC[C@@]1([C@@H]3[C@](CC[C@H]1C2(C)C)(C)[C@]5(C(=C/C3)\[C@@H]4[C@@H](C)[C@H](C)CC[C@]4(C)CC5)C)C (α) C[C@@]12CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)O)C)C)[C@@H]1CC(CC2)(C)C)C (β)
Properties
Molecular formula	C30H50O
Molar mass	426.72 g·mol−1
Melting point	α: 186 °C[1] β: 197-187.5 °C[2]
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

The amyrins are a pair of closely related natural chemical compounds of the triterpene class. They are designated α-amyrin and β-amyrin. Each has the chemical formula C₃₀H₅₀O. They are widely distributed in nature and have been isolated from a variety of plant sources. α-Amyrin is found in dandelion coffee.

References