205191-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205191-75-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,1,9 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 205191-75:
(8*2)+(7*0)+(6*5)+(5*1)+(4*9)+(3*1)+(2*7)+(1*5)=109
109 % 10 = 9
So 205191-75-9 is a valid CAS Registry Number.
205191-75-9Relevant articles and documents
Synthesis and reaction of some 2-alkylene-1,3-oxazolidines
Fernandez,Klemm
, p. 178 - 180 (1998)
Starting from 1,3-oxazoline 6 synthesis of ketene-O,N-acetals 2b, 2c is described via NBS bromination and HBr elimination. The N-sulfonyl-oxazolidines 10, 11 are synthesized by cyclization starting from aminoalcoho17, 10d react with potassium t-butoxide t
