138528-40-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138528-40-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,2 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138528-40:
(8*1)+(7*3)+(6*8)+(5*5)+(4*2)+(3*8)+(2*4)+(1*0)=142
142 % 10 = 2
So 138528-40-2 is a valid CAS Registry Number.
138528-40-2Relevant articles and documents
Pyrazin-2(1H)-ones from 3,4-disubstituted 4-aminoisoxazol-5(4H)-ones
Beccalli,Marchesini
, p. 861 - 862 (2007/10/02)
A new synthesis for 3,5,6-trisubstituted pyrazin-2(1H)-ones from 3,4-disubstituted 4-(phenyloxalylamino)- and 4-(alkyloxalylamino)-isoxazol-5(4H)-ones is reported.
