Phenol, 2-(1-methyl-2-butenyl)-, also known as 2-isopropenyl-5-methylphenol or thymol, is a naturally occurring monoterpene phenol with the chemical formula C10H14O. It is a colorless to pale yellow crystalline solid with a strong, aromatic odor. Thymol is widely found in the essential oils of plants such as Thymus vulgaris (thyme) and Tectona grandis (teak). It has various applications, including as a pharmaceutical agent, a flavoring agent, and an antimicrobial agent in food preservation. Thymol is also used in the synthesis of various chemicals, such as dyes, resins, and perfumes. Its chemical structure consists of a phenol group attached to a 1-methyl-2-butenyl side chain, which contributes to its unique properties and applications.
The CAS Registry Mumber 4204-40-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,0 and 4 respectively; the second part has 2 digits, 4 and 0 respectively. Calculate Digit Verification of CAS Registry Number 4204-40: (6*4)+(5*2)+(4*0)+(3*4)+(2*4)+(1*0)=54 54 % 10 = 4 So 4204-40-4 is a valid CAS Registry Number.