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112995-51-4

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112995-51-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 112995-51-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,9,9 and 5 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 112995-51:
(8*1)+(7*1)+(6*2)+(5*9)+(4*9)+(3*5)+(2*5)+(1*1)=134
134 % 10 = 4
So 112995-51-4 is a valid CAS Registry Number.

112995-51-4Relevant articles and documents

Azoles. Part 4. Nucleophilic Substitution Reactions of Halogenoimidazoles

Iddon, Brian,Khan, Nazir,Lim, Bee Lan

, p. 1437 - 1444 (2007/10/02)

A number of N-protected derivatives of 2,4,5-tribromoimidazole, 4(5)-bromo-5(4)-nitroimidazole, and 2,4(5)-dibromo-5(4)-nitroimidazole have been prepared by standard procedures and treated with various nucleophiles.Whereas 2,4,5-tribromo (and tri-iodo)imidazole reacted with sodium benzenethiolate to give the corresponding 4,5-dihalogenoimidazole and diphenyl disulphide, 1-protected derivatives of 2,4,5-tribromoimidazole reacted with various sodium alkane (or arene)thiolates and with sodium isopropoxide, in isoprpopyl alcohol, by displacement of the 2-bromine atom. 1-Benzyl-5-bromo-4-nitroimidazole (14), 2-(5-bromo-4-nitroimidazol-1-yl)acetate (25), and 5-bromo-4-nitro-1-phenacylimidazole (26) reacted by displacement of the 5-bromine atom.The product arising from reaction of the last compound with ethyl 2-mercaptoacetate in ethanol in the presence of base, cyclised to give ethyl 3-hydroxy-7-nitro-3-phenylimidazolothiazine-2-carboxylate (35).

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