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(2S,3R,4S,7R)-7-(tert-Butyl-dimethyl-silanyloxy)-2-trimethylsilanylethynyl-1-oxa-spiro[2.4]heptan-4-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

691012-80-3

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691012-80-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 691012-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,0,1 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 691012-80:
(8*6)+(7*9)+(6*1)+(5*0)+(4*1)+(3*2)+(2*8)+(1*0)=143
143 % 10 = 3
So 691012-80-3 is a valid CAS Registry Number.

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