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125763-09-9

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125763-09-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125763-09-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,7,6 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 125763-09:
(8*1)+(7*2)+(6*5)+(5*7)+(4*6)+(3*3)+(2*0)+(1*9)=129
129 % 10 = 9
So 125763-09-9 is a valid CAS Registry Number.

125763-09-9Upstream product

125763-09-9Relevant articles and documents

Synthesis of Heterocyclic Compounds by the Organotin Alkoxide Promoted Cleavage of γ-Bromo β-Lactones

Shibata, Ikuya,Toyota, Mitsuki,Baba, Akio,Matsuda, Haruo

, p. 2487 - 2491 (2007/10/02)

A variety of 2-oxazolidinones are prepared in good to excellent yields by the organotin alkoxide promoted ring cleavage of γ-bromo β-lactones.This reaction proceeds via the key organotin haloalkoxide intermediate, which reacts with an isocyanate followed by cyclization.Stereoisomerically pure products are obtained by combination with the stereoselective bromolactonization reaction.Moreover, other heterocumulenes such as RN=C=NR, RN=C=S, CO2, and γ-bromo β-lactam are used as substrates.

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