251981-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251981-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,8 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 251981-49:
(8*2)+(7*5)+(6*1)+(5*9)+(4*8)+(3*1)+(2*4)+(1*9)=154
154 % 10 = 4
So 251981-49-4 is a valid CAS Registry Number.
251981-49-4Relevant academic research and scientific papers
Carboxylic acid derivatives
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Page/Page column 6, (2008/06/13)
There are described compounds of formula wherein R1 is halo-C1-C6alkyl; halo-C2-C6alkenyl; or halo-C3-C6alkynyl; R2 is halogen, nitro, cyano, C1-C10/s
