1H-Inden-1-ol, 3a,4,5,6,7,7a-hexahydro-3,3a,7,7-tetramethyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 42741-51-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,7,4 and 1 respectively; the second part has 2 digits, 5 and 1 respectively. Calculate Digit Verification of CAS Registry Number 42741-51: (7*4)+(6*2)+(5*7)+(4*4)+(3*1)+(2*5)+(1*1)=105 105 % 10 = 5 So 42741-51-5 is a valid CAS Registry Number.