3-(3-chloro-propyl)-1,1-diphenyl-urea, also known as 3-(3-chloropropyl)-1,1-diphenylurea or CPPU, is a synthetic plant growth regulator belonging to the phenylurea family. It is primarily used to enhance fruit set and improve yield in various crops, such as tomatoes, cucumbers, and peppers, by stimulating cell division and elongation. The chemical structure consists of a urea group connected to two phenyl rings and a 3-chloropropyl side chain, which contributes to its biological activity. As a plant growth regulator, CPPU is subject to strict regulations and safety assessments to ensure its safe use in agriculture.
The CAS Registry Mumber 3420-65-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,4,2 and 0 respectively; the second part has 2 digits, 6 and 5 respectively. Calculate Digit Verification of CAS Registry Number 3420-65: (6*3)+(5*4)+(4*2)+(3*0)+(2*6)+(1*5)=63 63 % 10 = 3 So 3420-65-3 is a valid CAS Registry Number.