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210753-64-3

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210753-64-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 210753-64-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,0,7,5 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 210753-64:
(8*2)+(7*1)+(6*0)+(5*7)+(4*5)+(3*3)+(2*6)+(1*4)=103
103 % 10 = 3
So 210753-64-3 is a valid CAS Registry Number.

210753-64-3Relevant articles and documents

Zinc-Diethylaluminium Chloride Induced Coupling Reaction of Dibromofluoroacetate with Carbonyl Compounds. New Efficient and Selective Synthesis of α-Bromo-α-fluoro-β-hydroxy and α-Fluoro-β,β'-dihydroxy Esters

Ishihara, Takashi,Matsuda, Takayuki,Imura, Katsunori,Matsui, Hirofumi,Yamanaka, Hiroki

, p. 2167 - 2170 (2007/10/02)

Treatment of ethyl dibromofluoroacetate with aldehydes or ketone in the presence of zinc and diethylaluminium chloride at -20 deg C gave rise to the corresponding α-bromo-α-fluoro-β-hydroxy alkanoic acid ethyl esters in good yields, while the use of two equivalents each of aldehyde, zinc, and diethylaluminium chloride in the reaction resulted in a double coupling reaction affording the 1:2 adducts, α-fluoro-β,β'-dihydroxy esters in high yields.

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