433940-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 433940-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,3,9,4 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 433940-57:
(8*4)+(7*3)+(6*3)+(5*9)+(4*4)+(3*0)+(2*5)+(1*7)=149
149 % 10 = 9
So 433940-57-9 is a valid CAS Registry Number.
433940-57-9Relevant academic research and scientific papers
Chelation and extraction of copper(II) with 5-pyrazolone-based Schiff bases
Parmar,Barad,Pansuriya,Patel
, p. 688 - 698 (2011/12/16)
Copper(II) chelates of the Schiff bases (H2L), obtained by condensation of 4-butyryl-3-methyl-1-phenyl-pyrazoline-5-one (HBMPP) with o-phenylene diamine (H2L1) and p-phenylene diamine (H 2L2), have be