220663-05-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220663-05-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,6,6 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 220663-05:
(8*2)+(7*2)+(6*0)+(5*6)+(4*6)+(3*3)+(2*0)+(1*5)=98
98 % 10 = 8
So 220663-05-8 is a valid CAS Registry Number.
220663-05-8Relevant articles and documents
Reaction of 1-chloromethyl-4,5-dichloropyridazin-6-one
Chung, Hyun-A.,Kang, Young-Jin,Yoon, Yong-Jin
, p. 1257 - 1261 (1998)
Reaction of 1-chloromethyl-4,5-dichloropyridazin-6-one with some nucleophiles such as sodium methoxide, sodium azide, 2-mercaptopyrimidine and phenol gave 2, 3, 4, 7, 8 and 10. 5-Chloro-4-phenoxypyridazin-6-one (10) was also synthesized from 8 through 9.
