222180-54-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 222180-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,1,8 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 222180-54:
(8*2)+(7*2)+(6*2)+(5*1)+(4*8)+(3*0)+(2*5)+(1*4)=93
93 % 10 = 3
So 222180-54-3 is a valid CAS Registry Number.
222180-54-3Relevant articles and documents
β-Tosylhydrazono phosphonates in organic synthesis. An unambiguous entry to polysubstituted pyrazoles
Almirante,Benicchio,Cerri,Fedrizzi,Marazzi,Santagostino
, p. 299 - 302 (2007/10/03)
β-Tosylhydrazono phosphonates are novel, bifunctional reagents which were used for a concise approach to a wide range of polysubstituted pyrazoles in a single operation from aromatic and aliphatic aldehydes.
