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3H-Pyrazol-3-one, 4,4'-dithiobis[1-ethyl-1,2-dihydro-5-methyl-2-phenyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

138740-43-9

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138740-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138740-43-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,4 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138740-43:
(8*1)+(7*3)+(6*8)+(5*7)+(4*4)+(3*0)+(2*4)+(1*3)=139
139 % 10 = 9
So 138740-43-9 is a valid CAS Registry Number.

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