80991-62-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80991-62-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,9,9 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 80991-62:
(7*8)+(6*0)+(5*9)+(4*9)+(3*1)+(2*6)+(1*2)=154
154 % 10 = 4
So 80991-62-4 is a valid CAS Registry Number.
80991-62-4Relevant articles and documents
Synthesis of 2H-1,3-Oxazin-2-ones
Baydar, Ahmet E.,Boyd, Gerhard V.
, p. 2871 - 2877 (2007/10/02)
Treatment of C-substituted ternary maleisoimidium perchlorates (5),(18), and (24) with sodium azide gave the corresponding maleamic acid azides, which on heating underwent a Curtius rearrangement, followed by electrocyclisation, to yield 6-dialkylamino-de
