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183720-52-7

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183720-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 183720-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,7,2 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 183720-52:
(8*1)+(7*8)+(6*3)+(5*7)+(4*2)+(3*0)+(2*5)+(1*2)=137
137 % 10 = 7
So 183720-52-7 is a valid CAS Registry Number.

183720-52-7Relevant articles and documents

Ionic Liquid-Mediated Hydrofluorination of o-Azaxylylenes Derived from 3-Bromooxindoles

Mizuta, Satoshi,Otaki, Hiroki,Kitagawa, Ayako,Kitamura, Kanami,Morii, Yuki,Ishihara, Jun,Nishi, Kodai,Hashimoto, Ryo,Usui, Toshiya,Chiba, Kenya

, p. 2572 - 2575 (2017)

The hydrofluorination reaction of 3-bromooxindole using mild HF reagents in an ionic liquid is described. This transformation can operate at room temperature to give a series of 3-substituted 3-fluorooxindole derivatives including racemic BMS 204352 (MaxiPost). The mechanistic study about interactions between HF and 3-butyl-1-methylimidazolium tetrafluoroborate [bmim][BF4] is also discussed on the basis of energy calculations.

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