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(E)-4-((3aR,4R,6R,6aR)-6-Methoxy-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-but-3-en-2-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81691-12-5

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81691-12-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81691-12-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,9 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81691-12:
(7*8)+(6*1)+(5*6)+(4*9)+(3*1)+(2*1)+(1*2)=135
135 % 10 = 5
So 81691-12-5 is a valid CAS Registry Number.

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