(-)-1-(but-3-ynyl)-7β-hydroxy-4bβ-methyl-3,4,4aα,4b,5,6,7,8,8a,9,10,10aβ-dodecahydrophenanthren-2(1H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 75517-75-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,1 and 7 respectively; the second part has 2 digits, 7 and 5 respectively. Calculate Digit Verification of CAS Registry Number 75517-75: (7*7)+(6*5)+(5*5)+(4*1)+(3*7)+(2*7)+(1*5)=148 148 % 10 = 8 So 75517-75-8 is a valid CAS Registry Number.