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2,2,4,4-Tetrachlorodimedone is a chemical compound with the molecular formula C6H4Cl4O2. It is a white crystalline solid that is primarily used as a reagent in organic chemistry for the detection and determination of aldehydes and ketones. The compound is formed by the reaction of dimedone with chlorine, resulting in the substitution of four hydrogen atoms with chlorine atoms. 2,2,4,4-Tetrachlorodimedone is known for its sensitivity and specificity in detecting aldehydes and ketones, making it a valuable tool in analytical chemistry. It is also used in the synthesis of various pharmaceuticals and agrochemicals. Due to its reactivity and potential health risks, it is important to handle 2,2,4,4-tetrachlorodimedone with care, following proper safety protocols.

21428-81-9

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21428-81-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21428-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,2 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21428-81:
(7*2)+(6*1)+(5*4)+(4*2)+(3*8)+(2*8)+(1*1)=89
89 % 10 = 9
So 21428-81-9 is a valid CAS Registry Number.

21428-81-9Relevant academic research and scientific papers

PREPARATION AND ENOL ALLYL REARRANGEMENT OF POLYCHLORINATED DIMEDONE AND 4,4-DIMETHYL-1,3-CYCLOPENTANEDIONE DERIVATIVES

Buyck, L. De,Verhe, R.,Kimpe, N. De,Schamp, N.

, p. 307 - 322 (2007/10/02)

The 2-position in 5,5-dimethyl-1,3-cyclohexanedione (dimedone) and in 4,4-dimethyl-1,3-cyclopentanedione or their derivatives is completely and exclusively chlorinated with chlorine in dichloromethane.Dimethylformamide-hydrogen chloride mixtures, especial

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