3,3,5,5-Tetramethyl-cyclohexyl-tosylat, also known as 3,3,5,5-tetramethylcyclohexyl tosylate, is an organic compound with the chemical formula C16H26O3S. It is a derivative of cyclohexane, featuring four methyl groups (CH3) at the 3 and 5 positions, and a tosyl group (tosylate) attached to the cyclohexane ring. The tosyl group consists of a benzene ring with a sulfonate group (-SO3H) and a methyl group (-CH3). 3,3,5,5-Tetramethyl-cyclohexyl-tosylat is often used as a protecting group in organic synthesis, particularly in the protection of alcohols and amines, due to its stability and ease of removal under mild conditions. It is also known for its use in the synthesis of various pharmaceuticals and other organic compounds.
The CAS Registry Mumber 4176-65-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,7 and 6 respectively; the second part has 2 digits, 6 and 5 respectively. Calculate Digit Verification of CAS Registry Number 4176-65: (6*4)+(5*1)+(4*7)+(3*6)+(2*6)+(1*5)=92 92 % 10 = 2 So 4176-65-2 is a valid CAS Registry Number.