22687-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22687-56-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,8 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 22687-56:
(7*2)+(6*2)+(5*6)+(4*8)+(3*7)+(2*5)+(1*6)=125
125 % 10 = 5
So 22687-56-5 is a valid CAS Registry Number.
22687-56-5Relevant articles and documents
Pyridazine derivatives. XXIV. Efficient N-methylation of diversely substituted 3(2H)-pyridazinones using N,N-dimethylformamide dimethylacetal
Sotelo, Eddy,Ravina, Enrique
, p. 1675 - 1680 (2007/10/03)
A series of diversely substituted 3(2H)-pyridazinones were efficiently N-methylated at position 2 by treatment with N,N-dimethylformamide dimethylacetal in DMF.