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5-tert-Butyl-2-(2-trimethylsilanyl-allyl)-cyclohex-1-enecarbaldehyde is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81857-30-9

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81857-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81857-30-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,5 and 7 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81857-30:
(7*8)+(6*1)+(5*8)+(4*5)+(3*7)+(2*3)+(1*0)=149
149 % 10 = 9
So 81857-30-9 is a valid CAS Registry Number.

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