176659-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 176659-75-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,6,5 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 176659-75:
(8*1)+(7*7)+(6*6)+(5*6)+(4*5)+(3*9)+(2*7)+(1*5)=189
189 % 10 = 9
So 176659-75-9 is a valid CAS Registry Number.
176659-75-9Relevant articles and documents
An efficient synthesis of α-Cuparenone
Chavan, Subhash P.,Ravindranathan,Patil, Sachindra S.,Dhondge, Vijay D.,Dantale, Shuhhada W.
, p. 2629 - 2630 (1996)
Synthesis of α-Cuparenone is described. The key step involved are photorearrangement of α-halo arylketone (4) to 1-methyl-1-(p-tolyl)acetic acid (5) and extremely mild, essentially neutral, room temperature/3-aza-claisen reaction of N-allylamide (6).
