19221-93-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19221-93-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,2,2 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19221-93:
(7*1)+(6*9)+(5*2)+(4*2)+(3*1)+(2*9)+(1*3)=103
103 % 10 = 3
So 19221-93-3 is a valid CAS Registry Number.
19221-93-3Relevant articles and documents
Acetylation of β-diketone copper(II) chelates by treatment with ketene
Matare,Bohac,Hrnciar
, p. 381 - 382 (1994)
A new efficient method for preparation of acyclic α-acetylated β-diketone copper(II) chelates and their corresponding geminal triketones by treatment of starting β-diketone cuprates 1 with ketene is described.