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219621-22-4

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219621-22-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219621-22-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,6,2 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 219621-22:
(8*2)+(7*1)+(6*9)+(5*6)+(4*2)+(3*1)+(2*2)+(1*2)=124
124 % 10 = 4
So 219621-22-4 is a valid CAS Registry Number.

219621-22-4Relevant academic research and scientific papers

Synthesis and antimicrobial activity of coumarin pyrazole pyrimidine 2,4,6(1H,3H,5H)triones and thioxopyrimidine4,6(1H,5H)diones

Vijaya Laxmi,Suresh Kuarm,Rajitha

, p. 768 - 774 (2013/04/10)

A series of 5-((3-(2-oxo-2H-chromen-3-yl)-1-phenyl-1H-pyrazol-4-yl) methylene)pyrimidine-2,4,6(1H,3H,5H)-trione (4a-f) and dihydro-5-((3-(2-oxo-2H- chromen-3-yl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2-thioxopyrimidine-4,6(1H,5H) -dione (5a-f) derivatives w

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