ent-Estriol 3,16,17-tripropionate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 300853-40-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,0,8,5 and 3 respectively; the second part has 2 digits, 4 and 0 respectively. Calculate Digit Verification of CAS Registry Number 300853-40: (8*3)+(7*0)+(6*0)+(5*8)+(4*5)+(3*3)+(2*4)+(1*0)=101 101 % 10 = 1 So 300853-40-1 is a valid CAS Registry Number.