4-F-C6H4SO2CH2Br, also known as 4-fluorobenzenesulfonyl bromide, is an organic compound characterized by its molecular formula C7H6BrFOS. 4-F-C6H4SO2CH2Br features a benzene ring with a fluorine atom at the 4-position, a sulfonyl group (-SO2-) attached to the same carbon, and a bromine atom attached to a methylene group (-CH2-) that is also connected to the sulfonyl group. It is a valuable intermediate in the synthesis of various pharmaceuticals and agrochemicals due to its reactivity and functional group diversity. The presence of both electron-withdrawing fluorine and electron-donating bromine atoms, along with the sulfonyl group, makes it a versatile building block for the formation of complex molecules.
The CAS Registry Mumber 433-12-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,3 and 3 respectively; the second part has 2 digits, 1 and 2 respectively. Calculate Digit Verification of CAS Registry Number 433-12: (5*4)+(4*3)+(3*3)+(2*1)+(1*2)=45 45 % 10 = 5 So 433-12-5 is a valid CAS Registry Number.