781673-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 781673-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,1,6,7 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 781673-40:
(8*7)+(7*8)+(6*1)+(5*6)+(4*7)+(3*3)+(2*4)+(1*0)=193
193 % 10 = 3
So 781673-40-3 is a valid CAS Registry Number.
781673-40-3Relevant academic research and scientific papers
Adjustable cavity for host-guest recognition in cofacial bis-porphyrinic tweezer
Rein, Regis,Gross, Maurice,Solladie, Nathalie
, p. 1992 - 1993 (2008/10/09)
The synthesis of a cofacial bis-porphyrinic tweezer bearing a tris-anthracenic spacer is reported. Its behavior as host has been evidenced as well as the ability of its cavity to adjust to guests of various sizes.
