123220-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123220-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,2,2 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 123220-98:
(8*1)+(7*2)+(6*3)+(5*2)+(4*2)+(3*0)+(2*9)+(1*8)=84
84 % 10 = 4
So 123220-98-4 is a valid CAS Registry Number.
123220-98-4Relevant articles and documents
Ethyl 3-Trifluoro-2-diazo-propionate as a Potentially Useful CF3-containing Building Block: Preparation and 2-Catalysed Reaction with Nitriles
Shi, Guoqiang,Xu, Yuanyao
, p. 607 - 608 (1989)
A novel CF3-containing building block, ethyl 3-trifluoro-2-diazo-propionate, was easily prepared and reacted readily with nitriles in the presence of rhodium acetate to afford CF3-substituted oxazoles.
