2,3,5-trichloro-4-methyl-phenol, also known as 2,3,5-TCP, is a chemical compound with the molecular formula C7H5Cl3O. It is a white crystalline solid that is derived from phenol and is characterized by the presence of three chlorine atoms at the 2nd, 3rd, and 5th positions, along with a methyl group at the 4th position. 2,3,5-trichloro-4-methyl-phenol has been used as a chemical intermediate in the production of various pesticides and herbicides, although its use has been restricted or banned in many countries due to its potential health and environmental risks. 2,3,5-TCP is known to be toxic and can cause adverse effects on the liver, kidneys, and central nervous system. It is also classified as a probable human carcinogen by the International Agency for Research on Cancer (IARC). Due to these concerns, efforts have been made to reduce its presence in the environment and to find safer alternatives for its applications.
The CAS Registry Mumber 608-91-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,0 and 8 respectively; the second part has 2 digits, 9 and 1 respectively. Calculate Digit Verification of CAS Registry Number 608-91: (5*6)+(4*0)+(3*8)+(2*9)+(1*1)=73 73 % 10 = 3 So 608-91-3 is a valid CAS Registry Number.