2,3,4,8,9,10-hexahydro-5-hydroxy-2,2,8,8-tetramethylbenzo<1,2-b;3,4-b'>dipyrane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 19345-49-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,3,4 and 5 respectively; the second part has 2 digits, 4 and 9 respectively. Calculate Digit Verification of CAS Registry Number 19345-49: (7*1)+(6*9)+(5*3)+(4*4)+(3*5)+(2*4)+(1*9)=124 124 % 10 = 4 So 19345-49-4 is a valid CAS Registry Number.