99254-95-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99254-95-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,2,5 and 4 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 99254-95:
(7*9)+(6*9)+(5*2)+(4*5)+(3*4)+(2*9)+(1*5)=182
182 % 10 = 2
So 99254-95-2 is a valid CAS Registry Number.
99254-95-2Relevant articles and documents
1,2-1,4 addition reaction sequence leading to disubstituted acelylenes
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, (2008/06/13)
A method for synthesizing a tri-substituted phenyl compound (I) by using a 1,2-addition followed by a 1,4-addition to 1,4-benzoquinone (II): STR1 wherein X is hydroxy, alkoxy or alkanoyloxy, Ar1 is an organic group and R is an unsubstituted or