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255842-05-8

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255842-05-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 255842-05-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,5,8,4 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 255842-05:
(8*2)+(7*5)+(6*5)+(5*8)+(4*4)+(3*2)+(2*0)+(1*5)=148
148 % 10 = 8
So 255842-05-8 is a valid CAS Registry Number.

255842-05-8Relevant articles and documents

Synthesis and reactions of aromatic and heterocyclic isocyanides

Mironov,Mokrushin

, p. 693 - 697 (2007/10/03)

Reactions of halo-and nitroanilines with dichlorocarbene resulted in formation of the corresponding isocyanides in poor yields. Better results are obtained by treatment with phosphoryl chloride of formanilides having the same substituents. The latter procedure was used to prepare previously inaccessible derivatives of 2-pyridyl, 2-thiazolyl, and 1,3,4-thiadiazol-2-yl isocyanides. To prevent polymerization, the isocyanides were isolated as complexes with copper(I) bromide which can be decomposed with aqueous potassium cyanide to release free isocyanides. Aryl and heteryl isocyanides reacted with such nucleophiles as water and dimethylamine under mild conditions.

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