172957-24-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172957-24-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,9,5 and 7 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 172957-24:
(8*1)+(7*7)+(6*2)+(5*9)+(4*5)+(3*7)+(2*2)+(1*4)=163
163 % 10 = 3
So 172957-24-3 is a valid CAS Registry Number.
172957-24-3Relevant academic research and scientific papers
The synthesis of cofacial porphyrin dimers
Hiom, John,Paine III, John B.,Zapf, Udo,Dolphin, David
, p. 2220 - 2224 (2007/10/02)
A cofacial dimeric porphyrin joined by two hydrocarbon chains has been prepared using a bis-porphyrin already linked by a single hydrocarbon chain.When each porphyrin bears an acetylenic group, copper catalyzed coupling followed by catalytic hydrogenation
