66643-70-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66643-70-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,4 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 66643-70:
(7*6)+(6*6)+(5*6)+(4*4)+(3*3)+(2*7)+(1*0)=147
147 % 10 = 7
So 66643-70-7 is a valid CAS Registry Number.
66643-70-7Relevant academic research and scientific papers
Photochemical Synthesis of Heteroatom-Containing Polycyclic Aromatic Compounds (1a-d)
Kazuhiro, Maruyama,Otsuki, Tetsuo,Mitsui, Kiichiro,Tojo, Masahiro
, p. 695 - 700 (2007/10/02)
Anthrafuran, anthrabenzofuran, anthrathiophene, anthrathiophene, anthrabenzothiophene, anthrapyrrole and naphtocarbazole derivatives were synthesized in fairly good yields by a one-pot photocycloaddit
