Cas 120757-30-4,C17H14N2O4S

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Check Digit Verification of cas no

The CAS Registry Mumber 120757-30-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,7,5 and 7 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 120757-30:
(8*1)+(7*2)+(6*0)+(5*7)+(4*5)+(3*7)+(2*3)+(1*0)=104
104 % 10 = 4
So 120757-30-4 is a valid CAS Registry Number.

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120757-30-4Relevant academic research and scientific papers

4-Diazomethylcoumarins and Related Stable Heteroaryldiazomethanes. Thermal Conversion into Condensed Pyrazoles

Ito, Keiichi,Maruyama, Junko

, p. 1681 - 1687 (2007/10/02)

4-Diazomethyl-substituted coumarins, 1-methyl-2(1H)-quinolinones, 1-thiocoumarin and their tricyclic analogs were found to be easily cyclized into the corresponding pyrazole isomers condensed with heteroaromatics.Thermodependent feature of these conversio

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