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98751-25-8

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98751-25-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98751-25-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,7,5 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 98751-25:
(7*9)+(6*8)+(5*7)+(4*5)+(3*1)+(2*2)+(1*5)=178
178 % 10 = 8
So 98751-25-8 is a valid CAS Registry Number.

98751-25-8Downstream Products

98751-25-8Relevant articles and documents

Arylation with 1,3-Dinitroarenes and Copper(I) t-Butoxide. Scope and Limitations

Carter, Stephen D.,Wallace, Timothy W.

, p. 1601 - 1633 (2007/10/02)

The reaction of 1,3-dinitrobenzene with copper(I) t-butoxide and an iodoarene, which produces a 2,6-dinitrobiphenyl, has been stidied in detail with a variety of substrates.Iodoarenes containing ester, aldehyde, or other halogen functions were effective, but replacement of the iodoarene with a bromoarene, iodoalkyne, or iodoalkene resulted in less efficient coupling, promoting side-reactions.On replacing the second nitro group on the dinitrobenezene with nitrile, ester, amide, or trifluoromethyl groups, little or no coupling was observed.Limiting side-reactions usually involved the decomposition of substrates by t-butoxide via nucleophilic substitution, elimination, or deprotonation.A mechanism based on reversible cupration of the dinitroarene is proposed.

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