128766-41-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128766-41-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,6 and 6 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128766-41:
(8*1)+(7*2)+(6*8)+(5*7)+(4*6)+(3*6)+(2*4)+(1*1)=156
156 % 10 = 6
So 128766-41-6 is a valid CAS Registry Number.
128766-41-6Relevant articles and documents
C-H insertion method for the chiral tertiary alcohol: Formal synthesis of (-)-frontalin
Ohira, Susumu,Ishi, Satoshi,Shinohara, Koji,Nozaki, Hiroshi
, p. 1039 - 1040 (2007/10/02)
Intramolecular insertion of the alkylidene carbene into C - H bond adjacent to the protected secondary hydroxyl group gave a chiral tertiary alcohol derivative, which was converted to a synthetic intermediate of (-)-frontalin.