519137-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 519137-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,9,1,3 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 519137-55:
(8*5)+(7*1)+(6*9)+(5*1)+(4*3)+(3*7)+(2*5)+(1*5)=154
154 % 10 = 4
So 519137-55-4 is a valid CAS Registry Number.
519137-55-4Relevant articles and documents
Functionally substituted 3-heterylpyrazoles: XI. 3-[3-Aryl(heteryl)pyrazol-4-yl]propenoic and propanoic acids
Bratenko,Chornous,Vovk
, p. 1171 - 1177 (2007/10/03)
3-Aryl(heteryl)-4-formylpyrazoles by condensation with malonic acid furnish 3-[3-aryl(heteryl)-pyrazol-4-yl]propenoic acids that in the presence of Raney nickel are reduced by hydrazine hydrate to 3-[3-aryl(heteryl)pyrazol-4-yl]propanoic acids. The succes
