(20S)-(4E,8E,12E,16E)-20,21-Epoxy-4,8,13,17,21-pentamethyl-4,8,12,16-docosatetraen-1-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 158648-70-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,6,4 and 8 respectively; the second part has 2 digits, 7 and 0 respectively. Calculate Digit Verification of CAS Registry Number 158648-70: (8*1)+(7*5)+(6*8)+(5*6)+(4*4)+(3*8)+(2*7)+(1*0)=175 175 % 10 = 5 So 158648-70-5 is a valid CAS Registry Number.