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Ta(CH2C6H5)4Cl is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74920-40-4

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74920-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74920-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,2 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74920-40:
(7*7)+(6*4)+(5*9)+(4*2)+(3*0)+(2*4)+(1*0)=134
134 % 10 = 4
So 74920-40-4 is a valid CAS Registry Number.

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