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205309-72-4

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205309-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205309-72-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,3,0 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 205309-72:
(8*2)+(7*0)+(6*5)+(5*3)+(4*0)+(3*9)+(2*7)+(1*2)=104
104 % 10 = 4
So 205309-72-4 is a valid CAS Registry Number.

205309-72-4Downstream Products

205309-72-4Relevant articles and documents

Substituted N-Cyanomethyl-2-halo-N-methylarenecarboxamides as Precursors of 1,4-Benzothiazepines

Doelling, Wolfgang,Perjessy, Alexander,Schaller, Ingrid,Kolbe, Alfred

, p. 225 - 229 (2007/10/03)

2-Halogeno substituted N-cyanomethyl-N-methylbenzamides 1a-1i were investigated in a correlation analysis by ir spectroscopy to determine the conformational behavior. Compound 1h gives 4-methyl-2-methylthio-8-nitro-5-oxo-4,5-dihydro-1,4-benzothiazepine-3- carbonitrile 3 by dithiocarboxylation procedure whereas 1b was not able to react to heterocyclic seven-membered ring system.

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