2259-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2259-16-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,5 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 2259-16:
(6*2)+(5*2)+(4*5)+(3*9)+(2*1)+(1*6)=77
77 % 10 = 7
So 2259-16-7 is a valid CAS Registry Number.
2259-16-7Relevant articles and documents
Novel synthesis of (d,l) trans-chrysanthemic acid involving a β-diketone fragmentation
Krief, Alain,Jeanmart, Stephane
, p. 6167 - 6168 (2007/10/03)
Methyl (d,l) trans-chrysanthemate as well as its cis-diastereoisomer have been prepared from dimethyl dimedone, one of their isomers, in a few steps and with complete control of the relative stereochemistry.