3-Chloropropiophenone, also known as 3-chloro-1-phenyl-2-propanone, is an organic compound with the chemical formula C9H9ClO. It is a colorless to pale yellow liquid with a pungent, irritating odor. This chemical is primarily used as a precursor in the synthesis of various pharmaceuticals, agrochemicals, and other organic compounds. Due to its reactivity and potential health hazards, it is classified as a hazardous substance and requires proper handling and storage. 3-Chloropropiophenone is also known for its use in the clandestine production of psychoactive substances, which has led to its regulation and control in many countries.
The CAS Registry Mumber 936-54-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,3 and 6 respectively; the second part has 2 digits, 5 and 4 respectively. Calculate Digit Verification of CAS Registry Number 936-54: (5*9)+(4*3)+(3*6)+(2*5)+(1*4)=89 89 % 10 = 9 So 936-54-9 is a valid CAS Registry Number.