148761-09-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 148761-09-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,7,6 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 148761-09:
(8*1)+(7*4)+(6*8)+(5*7)+(4*6)+(3*1)+(2*0)+(1*9)=155
155 % 10 = 5
So 148761-09-5 is a valid CAS Registry Number.
148761-09-5Relevant articles and documents
A tandem ester cleavage-Michael addition reaction for the synthesis of oxygen heterocycles
Bunce,Bennett
, p. 1009 - 1020 (1993)
A tandem ester cleavage-Michael addition sequence has been developed for the preparation of five- and six-ring oxygen heterocycles bearing an acetic acid residue at C-2. Treatment of ethyl 6- or 7-acetyloxy-2-alkenoates with ethanolic sodium ethoxide affo
