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500766-02-9

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500766-02-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500766-02-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,7,6 and 6 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 500766-02:
(8*5)+(7*0)+(6*0)+(5*7)+(4*6)+(3*6)+(2*0)+(1*2)=119
119 % 10 = 9
So 500766-02-9 is a valid CAS Registry Number.

500766-02-9Relevant articles and documents

Synthesis of novel 2,3-dihydroimidazo[2,1-b][1,3]oxazoles through intramolecular nucleophilic ipso-substitution in 2-alkylsulfonylimidazoles

Moreno, Pilar,Heras, Montserrat,Maestro, Miguel,Villalgordo, Jose M.

, p. 2691 - 2700 (2007/10/03)

Readily available 2-(benzylsulfanyl)imidazoles 6, were studied as potential precursors toward the synthesis of novel diversely substituted 2,3-dihydroimidazo[2,1-b][1,3]oxazoles. Thus, the reaction between enolates derived from 6 and different electrophiles as well as the addition of Grignard reagents to the carbonyl group in 6 were explored. The formation of the fused imidazoxazoles 20 under mild conditions was successfully accomplished taking advantage of the key role played by the 2-alkylsulfonyl moiety in 19 as an efficient leaving group in intramolecular nucleophilic ipso-substitution reactions.

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