104970-89-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104970-89-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,9,7 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 104970-89:
(8*1)+(7*0)+(6*4)+(5*9)+(4*7)+(3*0)+(2*8)+(1*9)=130
130 % 10 = 0
So 104970-89-0 is a valid CAS Registry Number.
104970-89-0Relevant articles and documents
Diels-Alder Reactivity of Pyranoindol-3-ones, Stable Analogues of Indole-2,3-quinodimethanes
Moody, Christopher J.
, p. 2505 - 2508 (2007/10/02)
The Pyranoindol-3-ones (13a,b), stable synthetic analogues of indole-2,3-quinodimethanes, undergo Diels-Alder reactions with acetylenes to give, with concomitant loss of carbon dioxide, carbazoles.Thus, reaction with dimethyl acetylenedicarboxylate
