(4R,4aS,5S,6S,7aS)-6-Ethyl-2,2,4a,5-tetramethyl-4-vinyl-tetrahydro-furo[2,3-d][1,3]dioxin-5-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 87413-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,4,1 and 3 respectively; the second part has 2 digits, 2 and 0 respectively. Calculate Digit Verification of CAS Registry Number 87413-20: (7*8)+(6*7)+(5*4)+(4*1)+(3*3)+(2*2)+(1*0)=135 135 % 10 = 5 So 87413-20-5 is a valid CAS Registry Number.