(3aS,5aR,5bR,7aS,11aS,11bR,13bS)-2-Chloro-3a,5a,5b,8,8,11a-hexamethyl-icosahydro-cyclopenta[a]chrysene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 107638-41-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,7,6,3 and 8 respectively; the second part has 2 digits, 4 and 1 respectively. Calculate Digit Verification of CAS Registry Number 107638-41: (8*1)+(7*0)+(6*7)+(5*6)+(4*3)+(3*8)+(2*4)+(1*1)=125 125 % 10 = 5 So 107638-41-5 is a valid CAS Registry Number.