159144-45-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159144-45-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,1,4 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 159144-45:
(8*1)+(7*5)+(6*9)+(5*1)+(4*4)+(3*4)+(2*4)+(1*5)=143
143 % 10 = 3
So 159144-45-3 is a valid CAS Registry Number.
159144-45-3Relevant academic research and scientific papers
SYNTHESIS OF 3-ARYL-5-METHYLPYRROLIDINOPYRAZOLES
Kuz'menok, N. M.,Zvonok, A. M.
, p. 44 - 46 (2007/10/02)
The sequential conversion of 5-hydroxy-5-methyl-4-oxo-3-arylpyrrolidinopyrazoles to 5-methyl-5-chloro-4-oxo, 4-hydroxy-5-methyl-5-chloro-, and 5-methyl-4-oxo-3-arylpyrrolidinopyrazoles and the Huang-Minlon reduction of the last afforded 3-ar
