1H-3a,7-Methanoazulen-1-one,2,3,4,7,8,8ahexahydro- 3,6,8,8-tetramethyl-,(3R,3aS,7S,- 8aS)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 19902-32-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,0 and 2 respectively; the second part has 2 digits, 3 and 2 respectively. Calculate Digit Verification of CAS Registry Number 19902-32: (7*1)+(6*9)+(5*9)+(4*0)+(3*2)+(2*3)+(1*2)=120 120 % 10 = 0 So 19902-32-0 is a valid CAS Registry Number.