Fluorchlormethansulfonsaeure-anilid, also known as 4-fluorobenzenesulfonyl chloride, is an organic compound with the chemical formula C6H4ClFNO2S. It is a colorless to pale yellow crystalline solid that is soluble in organic solvents. Fluorchlormethansulfonsaeure-anilid is primarily used as an intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other specialty chemicals. It is also employed as a reagent in organic synthesis, particularly in the preparation of sulfonamide derivatives. Due to its reactivity, it is essential to handle Fluorchlormethansulfonsaeure-anilid with care, as it can cause irritation to the eyes, skin, and respiratory system.
The CAS Registry Mumber 1422-79-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,4,2 and 2 respectively; the second part has 2 digits, 7 and 9 respectively. Calculate Digit Verification of CAS Registry Number 1422-79: (6*1)+(5*4)+(4*2)+(3*2)+(2*7)+(1*9)=63 63 % 10 = 3 So 1422-79-3 is a valid CAS Registry Number.