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4-cyclopentylidene-5-methyl-2-phenyl-2,4-dihydro-pyrazol-3-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

109650-98-8

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109650-98-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109650-98-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,6,5 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 109650-98:
(8*1)+(7*0)+(6*9)+(5*6)+(4*5)+(3*0)+(2*9)+(1*8)=138
138 % 10 = 8
So 109650-98-8 is a valid CAS Registry Number.
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