Ethyl-<4-nitro-phenyl>-α-methoxy-butylphosphonat, also known as EPN, is an organophosphorus compound with the chemical formula C12H18NO6P. It is a colorless, oily liquid that is soluble in organic solvents and slightly soluble in water. EPN is primarily used as an insecticide, particularly for controlling a wide range of pests in agriculture, such as aphids, mites, and beetles. It works by inhibiting the enzyme acetylcholinesterase, which is essential for the proper functioning of the nervous system in insects. This inhibition leads to the accumulation of acetylcholine, causing overstimulation and ultimately paralysis and death of the target pests. Due to its high toxicity and potential environmental impact, the use of EPN has been restricted or banned in many countries.
The CAS Registry Mumber 1228-14-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,2 and 8 respectively; the second part has 2 digits, 1 and 4 respectively. Calculate Digit Verification of CAS Registry Number 1228-14: (6*1)+(5*2)+(4*2)+(3*8)+(2*1)+(1*4)=54 54 % 10 = 4 So 1228-14-4 is a valid CAS Registry Number.