251639-67-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251639-67-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,6,3 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 251639-67:
(8*2)+(7*5)+(6*1)+(5*6)+(4*3)+(3*9)+(2*6)+(1*7)=145
145 % 10 = 5
So 251639-67-5 is a valid CAS Registry Number.
251639-67-5Relevant articles and documents
Highly stereoselective synthesis of a sex pheromone of the dry bean beetle Callosobruchus analis
Pinsker,Tsiklauri,Grigor'eva
, p. 1373 - 1375 (2007/10/03)
Total synthesis of 3-methylhept-2(Z)-enoic acid, a sex pheromone of the dry bean beetle Callosobruchus analis, has been performed using a previously developed highly stereoselective method of the construction of disubstituted (Z)-methylolefins based on th
