66643-68-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66643-68-3 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, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 66643-68:
(7*6)+(6*6)+(5*6)+(4*4)+(3*3)+(2*6)+(1*8)=153
153 % 10 = 3
So 66643-68-3 is a valid CAS Registry Number.
66643-68-3Relevant articles and documents
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