Cyclohexanone, 2-(4-pentenylidene)-, also known as 2-(4-penten-1-yl)cyclohexanone or 2-(4-pentenyl)cyclohexanone, is an organic compound with the molecular formula C11H18O. It is a colorless to pale yellow liquid with a strong, pungent odor. This chemical is primarily used as a fragrance ingredient in various consumer products, such as perfumes, soaps, and cosmetics, due to its pleasant, floral scent. It is also employed as a synthetic intermediate in the production of other chemicals and pharmaceuticals. Cyclohexanone, 2-(4-pentenylidene)-, is synthesized through various chemical reactions, including the condensation of cyclohexanone with 4-pentenylmagnesium bromide. It is important to note that Cyclohexanone, 2-(4-pentenylidene)- may cause skin and eye irritation, and prolonged exposure may lead to respiratory issues, making it essential to handle it with proper safety measures.
The CAS Registry Mumber 3643-57-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,4 and 3 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 3643-57: (6*3)+(5*6)+(4*4)+(3*3)+(2*5)+(1*7)=90 90 % 10 = 0 So 3643-57-0 is a valid CAS Registry Number.