50997-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 50997-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,9,9 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 50997-20:
(7*5)+(6*0)+(5*9)+(4*9)+(3*7)+(2*2)+(1*0)=141
141 % 10 = 1
So 50997-20-1 is a valid CAS Registry Number.
50997-20-1Relevant articles and documents
Synthesis and properties of chiral N,N-maleoyl derivatives and Diels-Alder reactions with cyclopentadiene
Bodtke,Otto, Hans-Hartwig
, p. 803 - 813 (2007/10/03)
Maleyl amino acid derivatives were prepared from maleic anhydride and cyclized by reaction with ZnCl2 and hexamethyldisilazane yielding maleoyl derivatives. These derivatives were used as dienophiles in cycloadditions with cyclopentadiene. The
