209668-66-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209668-66-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,6,6 and 8 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 209668-66:
(8*2)+(7*0)+(6*9)+(5*6)+(4*6)+(3*8)+(2*6)+(1*6)=166
166 % 10 = 6
So 209668-66-6 is a valid CAS Registry Number.
209668-66-6Relevant articles and documents
The first synthesis of monoazaporphyrins bearing a nitrogen atom at the peripheral position
Kai, Shigeo,Suzuki, Mikio,Masaki, Yukio
, p. 4063 - 4066 (2007/10/03)
2-Aza-3,7,8,12,13,17,18-heptaalkylporphyrins were synthesized by use of improved '3+1' condensation under non-acidic conditions.
