508-04-3 Usage
Chemical Description
α-Amyrin is a triterpene compound found in many plant species.
Uses
α-Amyrin is a natural chemical compound of the triterpene class. It is a pentacyclic triterpenol widely distributed in nature and has been isolated from a variety of plant sources such as epicuticular wax.
Definition
ChEBI: A pentacyclic triterpenoid that is oleanane which has a double bond between positions 13 and 18, and in which the hydrogen at the 3beta position is replaced by a hydroxy group.
Purification Methods
Purify it through an Al2O3 column and eluting with pet ether (40-60o) then Et2O and recrystallising from pet ether or EtOH. The acetate crystallises from Ac2O or pet ether and has m 242-143o and [] D +82.8o (c 0.81, CHCl3) [Crow & Michael Aust J Chem 8 133 1955, Barton et al. J Chem Soc (C) 1031 1968, Beilstein 6 III 1894, 6 IV 4195.]
Check Digit Verification of cas no
The CAS Registry Mumber 508-04-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,0 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 508-04:
(5*5)+(4*0)+(3*8)+(2*0)+(1*4)=53
53 % 10 = 3
So 508-04-3 is a valid CAS Registry Number.
508-04-3Relevant articles and documents
A short enantioselective total synthesis of the fundamental pentacyclic triterpene lupeol
Surendra, Karavadhi,Corey
supporting information; experimental part, p. 13928 - 13929 (2009/12/25)
(Chemical Equation Presented) The first enantioselective synthesis of lupeol has been developed by applying two carefully crafted cation-π cyclization stages to generate the pentacyclic structure with complete stereocontrol. The synthesis (Scheme 1) is no
