18841-76-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18841-76-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,4 and 1 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 18841-76:
(7*1)+(6*8)+(5*8)+(4*4)+(3*1)+(2*7)+(1*6)=134
134 % 10 = 4
So 18841-76-4 is a valid CAS Registry Number.
18841-76-4Relevant articles and documents
A novel one-pot two-component synthesis of tricyclic pyrano[2,3-b] quinoxalines
Goswami, Shyamaprosad,Adak, Avijit Kumar
, p. 221 - 224 (2005)
Tricyclic pyrano[2,3-b]quinoxalines 6 have been synthesized in one step by the reaction of o-phenylenediamine and phenylhydrazone derivatives 8a-c in good yields. A one-pot two-component synthesis of tricyclic pyrano[2,3-b]quinoxalines with a pendant hydr