190523-52-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 190523-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,5,2 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 190523-52:
(8*1)+(7*9)+(6*0)+(5*5)+(4*2)+(3*3)+(2*5)+(1*2)=125
125 % 10 = 5
So 190523-52-5 is a valid CAS Registry Number.
190523-52-5Relevant academic research and scientific papers
A convenient synthesis of chiral, non-racemic [4aS,8aR]- 5,5,8a-trimethyl octahydro-2,2-(1,3-dioxolane)-naphthalene
Tenius, Beatriz S. M.,Schroeder, Evelyn K.
, p. 1371 - 1378 (2007/10/03)
(-)-(4aS,8aR)-5,5-8a-trimethyl-trans-decaline 1 was prepared in a stereoespecific synthesis of 4 steps and 38% yield. The key- step involves an asymmetric Robinson annulation via Michael addition of chiral imine.
