28864-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28864-31-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,8,6 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 28864-31:
(7*2)+(6*8)+(5*8)+(4*6)+(3*4)+(2*3)+(1*1)=145
145 % 10 = 5
So 28864-31-5 is a valid CAS Registry Number.
28864-31-5Relevant articles and documents
Synthesis of 2-R-3-Hydroxy[1,2,4]triazino[6,1-b]-quinazoline-4,10-diones
Shemchuk,Chernykh,Krys'kiv
, p. 752 - 756 (2007/10/03)
A preparation method was developed for [1,2,4]triazino[6,1-b]quinazoline-4, 10-diones using isatoic anhydride, carboxylic acids hydrazides, ethyl oxalyl chloride, and hydroxylamine. Pleiades Publishing, Inc. 2006.