211569-58-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 211569-58-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,5,6 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 211569-58:
(8*2)+(7*1)+(6*1)+(5*5)+(4*6)+(3*9)+(2*5)+(1*8)=123
123 % 10 = 3
So 211569-58-3 is a valid CAS Registry Number.
211569-58-3Relevant articles and documents
A novel synthesis of dihydropyrimidothienopyridazine derivatives
Quintela, Jose Ma.,Alvarez-Sarandes, Rafael,Peinador, Carlos
, p. 8107 - 8122 (2007/10/03)
Aza-Wittig reaction of iminophosphorane 3, derived from 5- amino-3,4-diphenylthieno[2,3-c]piridazine-6-carboxaldehyde (1), with isocyanates, followed by intramolecular hetero conjugate addition annulation after addition of an amine, gives the functionaliz
