140389-07-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140389-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,3,8 and 9 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 140389-07:
(8*1)+(7*4)+(6*0)+(5*3)+(4*8)+(3*9)+(2*0)+(1*7)=117
117 % 10 = 7
So 140389-07-7 is a valid CAS Registry Number.
140389-07-7Relevant articles and documents
Synthesis of Tribenzotriquinacene and Some centro-Substituted Derivatives
Kuck, Dietmar,Lindenthal, Thomas,Schuster, Andreas
, p. 1449 - 1460 (2007/10/02)
The syntheses of tribenzotriquinacene (1a) and five centro-substituted derivatives, 1b-1e and 1g, as well as of the related diindan 13 are reported.The three-step synthetic sequences include the reduction of suitably substituted 2-benzhydryl-1,3-indandion