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2-(2-Chlor-phenyl)-2-(9-fluorenyl)-propionsaeure, also known as 2-(2-chlorophenyl)-2-(9-fluorenyl)propionic acid, is a chemical compound with the molecular formula C20H17ClO2. It is a derivative of propionic acid, featuring a 2-chlorophenyl group and a 9-fluorenyl group attached to the propionic acid backbone. 2-(2-Chlor-phenyl)-2-(9-fluorenyl)-propionsaeure is of interest in organic chemistry and may have potential applications in the synthesis of pharmaceuticals or other specialty chemicals due to its unique structural features. The presence of the chlorine atom and the fluorenyl group can influence its reactivity and physical properties, making it a subject of study for chemists exploring the effects of different substituents on molecular behavior.

5209-05-2

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5209-05-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5209-05-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,0 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 5209-05:
(6*5)+(5*2)+(4*0)+(3*9)+(2*0)+(1*5)=72
72 % 10 = 2
So 5209-05-2 is a valid CAS Registry Number.
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