78771-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78771-20-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,7,7 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 78771-20:
(7*7)+(6*8)+(5*7)+(4*7)+(3*1)+(2*2)+(1*0)=167
167 % 10 = 7
So 78771-20-7 is a valid CAS Registry Number.
78771-20-7Relevant articles and documents
PREPARATION OF 5-METHYL-3H-OXAZOLOPYRIDINE-2-THIONE AND ITS REACTION WITH AMINES
Davidkov, K.,Simov, D.
, p. 441 - 442 (1981)
5-Methyl-3H-oxazolopyridine-2-thione, which exists in the dipolar form, was obtained by the reaction of 6-methyl-2-amino-3-hydroxypyridine with potassium ethylxanthate.The reaction of the product with amines leads to the corresponding thioureas.