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1374400-41-5

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1374400-41-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1374400-41-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,4,4,0 and 0 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1374400-41:
(9*1)+(8*3)+(7*7)+(6*4)+(5*4)+(4*0)+(3*0)+(2*4)+(1*1)=135
135 % 10 = 5
So 1374400-41-5 is a valid CAS Registry Number.

1374400-41-5Downstream Products

1374400-41-5Relevant articles and documents

New regio-selective method of combinatorial synthesis of substituted thiophenes, thieno[3,2-b]pyridines and other heterocycles via combination of 'domino'-type reactions

Zubarev, Andrey A.,Shestopalov, Anatoliy M.,Larionova, Natalia A.,Rodinovskaya, Lyudmila A.,Shestopalov, Alexander A.

, p. 9648 - 9655 (2013/10/22)

We present a novel combinatorial multicomponent regio-selective approach towards the synthesis of thieno[3,2-b]pyridines and pyridine pyrans. The methodology is based on the 'domino'-type reaction. The high regio-selectivity in this reaction is gained by the in situ generation of the mono-potassium salt of 2-cyano-1-mercaptoethenethiolate. We also demonstrate that the use of ethyl 2-cyanoacetate in this reaction as a CH-acid leads to the termination of the domino sequence at the Dieckmann condensation step and yields novel ethyl 3-(4-cyano-3-hydroxy-5-(alkylthio)thiophen-2-yl)-3-oxopropanoate.

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