721922-86-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721922-86-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,9,2 and 2 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 721922-86:
(8*7)+(7*2)+(6*1)+(5*9)+(4*2)+(3*2)+(2*8)+(1*6)=157
157 % 10 = 7
So 721922-86-7 is a valid CAS Registry Number.
721922-86-7Relevant articles and documents
A square cyclic porphyrin dodecamer: Synthesis and single-molecule characterization
Kato, Aiko,Sugiura, Ken-Ichi,Miyasaka, Hitoshi,Tanaka, Hiroyuki,Kawai, Tomoji,Sugimoto, Manabu,Yamashita, Masahiro
, p. 578 - 579 (2004)
We prepared a square cyclic porphyrin dodecamer via the tetramerization of a trimer shaped like a right angle. The molecule was visualized by scanning tunneling microscopy to be square.