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178042-98-3

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178042-98-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 178042-98-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,0,4 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 178042-98:
(8*1)+(7*7)+(6*8)+(5*0)+(4*4)+(3*2)+(2*9)+(1*8)=153
153 % 10 = 3
So 178042-98-3 is a valid CAS Registry Number.

178042-98-3Relevant articles and documents

An Efficient Coupling of p-Quinone Mono-Imine Ketals and Aryl/Alkyl Thiols: Rapid Synthesis of Biaryl/Aryl–Alkyl Sulfides

Sharma, Arun,Peddinti, Rama Krishna

, p. 2230 - 2237 (2017/05/01)

We report a fast, efficient, and metal-free protocol for the synthesis of unsymmetrical biaryl sulfides and aryl–alkyl sulfides (4-methoxy-2-sulfanyl-phenylcarbamates) under catalytic influence of 2,4-dinitrobenzoic acid. The reaction proceeded in a regioselective anti-Michael addition fashion and all the products were obtained within a very short period of time and in good to excellent yields.

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