2-Methyl-4-octyl-phenol, also known as 4-n-Octylphenol or 4-(1,1,3,3-tetramethylbutyl)phenol, is an organic compound with the chemical formula C15H24O. It is a colorless to pale yellow liquid with a molecular weight of 220.35 g/mol. 2-Methyl-4-octyl-phenol is characterized by a phenol group (C6H4OH) with an octyl chain (C8H17) attached to the para position (4-position) and a methyl group (CH3) at the ortho position (2-position). 2-Methyl-4-octyl-phenol is primarily used as an intermediate in the synthesis of nonylphenol ethoxylates, which are surfactants and detergents. It is also used in the production of lubricants, emulsifiers, and other industrial chemicals. Due to its potential environmental and health concerns, its use is regulated in some regions.
The CAS Registry Mumber 5075-81-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,0,7 and 5 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 5075-81: (6*5)+(5*0)+(4*7)+(3*5)+(2*8)+(1*1)=90 90 % 10 = 0 So 5075-81-0 is a valid CAS Registry Number.