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1256281-52-3

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1256281-52-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256281-52-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,2,8 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1256281-52:
(9*1)+(8*2)+(7*5)+(6*6)+(5*2)+(4*8)+(3*1)+(2*5)+(1*2)=153
153 % 10 = 3
So 1256281-52-3 is a valid CAS Registry Number.

1256281-52-3Upstream product

1256281-52-3Downstream Products

1256281-52-3Relevant academic research and scientific papers

Synthesis and properties of 3-cyano-3-hetaryl-ylidene-2-oxopropyl ethanethioates and 4-cyano-4-hetarylylidene-3-oxobutyl ethanethioates

Dobridnev,Volovnenko,Turov,Volovenko

experimental part, p. 887 - 895 (2011/07/08)

Acylation of hetarylacetonitriles and hetarylylideneacetonitriles with acetylmercaptoacetyl chloride gave 3-cyano-3-hetarylylidene-2-oxopropyl ethanethioates. 2-Amino-3-hetaryl-4(5H)oxothio-phenes or 2-hetarylylidene-3-oxo- 4-sulfanylbutanenitriles were obtained on treating them with bases. Acylation of hetarylacetonitriles with 3-acetylmercaptopropionyl chloride gave 4-cyano-4-hetaryl-ylidene-3-oxobutyl ethanethioates, deacetylation of which gave 2-hetarylylidene-3-oxo-5-sulfanyl-pentanenitriles.

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