1-Hydroxy-3,3-dimethyl-1-phenylurea, also known as diuron, is a widely used herbicide belonging to the phenylurea class. It is an organic compound with the chemical formula C9H10N2O2, characterized by a urea group connected to a phenyl ring and two methyl groups on the nitrogen atom. Diuron is effective in controlling a broad spectrum of weeds, particularly in agricultural settings, by inhibiting photosynthesis. It is known for its persistence in the environment and potential to leach into groundwater, which has led to concerns regarding its impact on aquatic ecosystems and the development of resistance in some weed species. Despite these issues, diuron remains a popular choice for weed management due to its effectiveness and relatively low cost.
The CAS Registry Mumber 6263-34-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,2,6 and 3 respectively; the second part has 2 digits, 3 and 4 respectively. Calculate Digit Verification of CAS Registry Number 6263-34: (6*6)+(5*2)+(4*6)+(3*3)+(2*3)+(1*4)=89 89 % 10 = 9 So 6263-34-9 is a valid CAS Registry Number.