Cyclopentene, 1-methyl-3-(1-methylethyl)-2-(1-propynyl)- (9CI) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 126133-03-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,6,1,3 and 3 respectively; the second part has 2 digits, 0 and 3 respectively. Calculate Digit Verification of CAS Registry Number 126133-03: (8*1)+(7*2)+(6*6)+(5*1)+(4*3)+(3*3)+(2*0)+(1*3)=87 87 % 10 = 7 So 126133-03-7 is a valid CAS Registry Number.