2,4-Dichlor-3-(2-methylen-butyryl) phenoxyessigsaeure, also known as 2,4-dichlorophenoxyacetic acid (2,4-D), is a widely used synthetic auxin-type herbicide. It is a chlorinated phenoxy acid derivative with the chemical formula C10H9Cl2O3. 2,4-D is primarily used to control broadleaf weeds and woody plants in agricultural fields, lawns, and gardens. It works by mimicking the action of natural plant hormones, causing uncontrolled growth and eventually leading to the death of the targeted plants. However, its use has been a subject of controversy due to potential environmental and health risks, including its persistence in soil and water, potential endocrine disruption, and the development of herbicide-resistant weeds. As a result, the application of 2,4-D is regulated in many countries, and alternative, more environmentally friendly herbicides are being developed.
The CAS Registry Mumber 6467-57-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,6 and 7 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 6467-57: (6*6)+(5*4)+(4*6)+(3*7)+(2*5)+(1*7)=118 118 % 10 = 8 So 6467-57-8 is a valid CAS Registry Number.