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(+/-)-(7S,8R)-3-tert-butyl-2,3-isopropylidenedioxyspiro<4.4>nona-1,3-diene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

138680-54-3

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138680-54-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138680-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,8 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 138680-54:
(8*1)+(7*3)+(6*8)+(5*6)+(4*8)+(3*0)+(2*5)+(1*4)=153
153 % 10 = 3
So 138680-54-3 is a valid CAS Registry Number.

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