8-pentachlorophenoxy-3,6-dioxa-octan-1-ol, also known as pentachlorophenol (PCP), is a chemical compound with the formula C13H6Cl5O2. It is a white crystalline solid that is highly toxic and has been used as a broad-spectrum biocide, fungicide, and herbicide. PCP is known for its ability to protect wood from decay and insect damage, making it a popular preservative for timber. However, due to its persistence in the environment and potential health risks, including carcinogenicity and endocrine disruption, its use has been restricted or banned in many countries. Despite these concerns, it is still used in some applications, such as controlling algae in industrial water systems, and as a disinfectant in certain medical and veterinary contexts.
The CAS Registry Mumber 5197-69-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,1,9 and 7 respectively; the second part has 2 digits, 6 and 9 respectively. Calculate Digit Verification of CAS Registry Number 5197-69: (6*5)+(5*1)+(4*9)+(3*7)+(2*6)+(1*9)=113 113 % 10 = 3 So 5197-69-3 is a valid CAS Registry Number.