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175966-93-5

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175966-93-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 175966-93-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,9,6 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 175966-93:
(8*1)+(7*7)+(6*5)+(5*9)+(4*6)+(3*6)+(2*9)+(1*3)=195
195 % 10 = 5
So 175966-93-5 is a valid CAS Registry Number.

175966-93-5Downstream Products

175966-93-5Relevant articles and documents

First synthesis of 3-acetyl-2-aminothiophenes using the gewald reaction

Eller, Gernot A.,Holzer, Wolfgang

, p. 371 - 376 (2007/10/03)

Novel 3-acetyl-2-aminothiophenes were prepared from cyanoacetone and 1,4-dithianyl-2,5-diols using a modified Gewald reaction. The syntheses of the corresponding acetamides, as well as that of 3-acetyl-2-amino-5-nitrothiophene - an interesting building-block for thiophene azo dyes - are reported. Detailed spectroscopic investigations (1H-NMR, 13C-NMR, MS, IR) of the obtained compounds are presented.

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