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42009-92-7

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42009-92-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42009-92-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,0 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42009-92:
(7*4)+(6*2)+(5*0)+(4*0)+(3*9)+(2*9)+(1*2)=87
87 % 10 = 7
So 42009-92-7 is a valid CAS Registry Number.

42009-92-7Relevant articles and documents

Ionic liquid as reagent. A green procedure for the regioselective conversion of epoxides to vicinal-halohydrins using [AcMIm]X under catalyst- and solvent-free conditions

Ranu, Brindaban C.,Banerjee, Subhash

, p. 4517 - 4519 (2007/10/03)

A variety of structurally diverse epoxides undergo facile cleavages by ionic liquid, [AcMIm]X without any catalyst and solvent to produce the corresponding vicinal halohydrins in high yields. The cleavages are considerably fast and highly regioselective.

Regio- and Stereoselective Synthesis of β-Halohydrins from 1,2-Epoxides with Ammonium Halides in the Presence of Metal Salts

Chini, Marco,Crotti, Paolo,Gardelli, Cristina,Macchia, Franco

, p. 3805 - 3812 (2007/10/02)

A simple efficient, stereoselective, and regioselective method for the synthesis of β-chlorohydrins, β-bromohydrins, and β-iodohydrins by the direct opening of 1,2-epoxides with the corresponding ammonium halide in acetonitrile, in the presence of metal salts, is described.This new method appears to be of general use and competitive with the other methods previously reported.

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