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Name	alpha-Amyrin	EINECS	211-352-1
CAS No.	638-95-9	Density	0.9600 (rough estimate)
PSA	20.23000	LogP	8.02480
Solubility	SOLVENT < Soluble in ether, benzene, chloroform, glacial acetic acid	Melting Point	188 C
Formula	C30H50 O	Boiling Point	243 C
Molecular Weight	426.726	Flash Point	218.6oC
Transport Information	HAZARD	Appearance	white crystalline powder
Safety		Risk Codes	N/A
Molecular Structure		Hazard Symbols	UN NO.
Synonyms	Urs-12-en-3b-ol (6CI,8CI); Viminalol (7CI); 3b-Hydroxyurs-12-ene; NSC 114787; a-Amirin; a-Amyrenol; a-Amyrin; a-Amyrine	Article Data	25

alpha-Amyrin Synthetic route

: 863-76-3, 101915-52-0, 22395-84-2
urs-12-en-3β-yl acetate

: 638-95-9
α-amyrin

Conditions

Conditions	Yield
With potassium hydroxide In methanol Reflux;	99%
Stage #1: urs-12-en-3β-yl acetate With methanol; sodium methylate at 20℃; for 2h; Stage #2:	92%
With methanol; sodium methylate at 20℃; for 2h;	88%
With potassium hydroxide In methanol
With potassium hydroxide In ethanol for 3h; Deacetylation; Heating;

: (3β)-3-{[(1,1-dimethylethyl)dimethylsilyl]oxy}-urs-12-en

: 638-95-9
α-amyrin

Conditions

Conditions	Yield
With tetrabutyl ammonium fluoride In tetrahydrofuran at 20℃; for 14h; Reagent/catalyst; Solvent;	94%

: 638-96-0
urs-12-en-3-one

: 555-31-7
aluminum isopropoxide

A: 638-95-9
α-amyrin

B: 5937-48-4
3α-hydroxyurs-12-ene

Conditions

Conditions	Yield
With isopropyl alcohol

: 638-96-0
urs-12-en-3-one

A: 638-95-9
α-amyrin

B: 5937-48-4
3α-hydroxyurs-12-ene

Conditions

Conditions	Yield
With nickel Hydrogenation;

: 3α-acetoxy-ursen-(12)-al-(24)-semicarbazone

: 141-52-6
sodium ethanolate

: 638-95-9
α-amyrin

Conditions

Conditions	Yield
at 200℃;

: 3β-acetoxy-ursen-(12)-al-(28)-semicarbazone

: 141-52-6
sodium ethanolate

: 638-95-9
α-amyrin

Conditions

Conditions	Yield
at 200℃;

: 638-96-0
urs-12-en-3-one

: 555-31-7
aluminum isopropoxide

: 67-63-0
isopropyl alcohol

A: 638-95-9
α-amyrin

B: 5937-48-4
3α-hydroxyurs-12-ene

: 22255-10-3
(3β)-urs-12-en-3-yl palmitate

A: 36653-82-4
1-Hexadecanol

B: 638-95-9
α-amyrin

Conditions

Conditions	Yield
With lithium aluminium tetrahydride

: α-L-rhamnopyranosyl-(1->4)-β-D-glucopyranosyl-(1->3)-α-amyrin

: 638-95-9
α-amyrin

Conditions

Conditions	Yield
With sulfuric acid In ethanol

fraction No3 of Canarium zeylanicum benzene extract: fraction No3 of Canarium zeylanicum benzene extract

: 638-95-9
α-amyrin

Conditions

Conditions	Yield
With nitric acid; sodium chloride In pyridine at 0℃; for 0.2h;	2.9 g

alpha-Amyrin Chemical Properties

Molecular Structure of alpha-Amyrin (CAS NO.638-95-9):

IUPAC Name: (3S,4alphaR,6alphaR,6betaS,8alphaR,11R,12S,12alphaR,14alphaR,14betaR)-4,4,6alpha,6beta,8alpha,11,12,14beta-Octamethyl-2,3,4alpha,5,6,7,8,9,10,11,12,12alpha,14,14alpha-tetradecahydro-1H-picen-3-ol
Molecular Formula: C₃₀H₅₀O
Molecular Weight: 426.72
EINECS: 211-352-1
Index of Refraction: 1.537
Molar Refractivity: 131.86 cm³
Molar Volume: 421.6 cm³
Surface Tension: 39.1 dyne/cm
Density: 1.01 g/cm³
Melting Point: 186 °C
Flash Point: 218.6 °C
Enthalpy of Vaporization: 87.66 kJ/mol
Boiling Point: 493.8 °C at 760 mmHg
Vapour Pressure: 8.06E-12 mmHg at 25 °C
Product Categories: Tri-Terpenoids
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
InChI: 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

alpha-Amyrin Safety Profile

Safety Information of alpha-Amyrin (CAS NO.638-95-9):
Hazard Codes: Irritant Xi

alpha-Amyrin Specification

alpha-Amyrin (CAS NO.638-95-9), its Synonyms are Viminalol ; alpha-Amyrenol ; alpha-Amyrine ; Urs-12-en-3-ol, (3beta)- (9CI) ; Urs-12-en-3beta-ol ; 3beta-Hydroxyurs-12-ene .

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