201543-16-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201543-16-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,5,4 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 201543-16:
(8*2)+(7*0)+(6*1)+(5*5)+(4*4)+(3*3)+(2*1)+(1*6)=80
80 % 10 = 0
So 201543-16-0 is a valid CAS Registry Number.
201543-16-0Relevant academic research and scientific papers
Synthesis of chiral 3-substituted isoxazolidines
Farr, Roger N.
, p. 195 - 196 (2007/10/03)
The synthesis of chiral (>98% ee) 3-substituted isoxazolidines has been achieved. Glycidyl tosylate was utilized to establish the desired stereochemistry in a 'double grignard' reaction sequence. Mesylate displacement followed by acid-catalyzed cyclization allows the parent isoxazolidines to be obtained.
