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647016-73-7

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647016-73-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 647016-73-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,7,0,1 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 647016-73:
(8*6)+(7*4)+(6*7)+(5*0)+(4*1)+(3*6)+(2*7)+(1*3)=157
157 % 10 = 7
So 647016-73-7 is a valid CAS Registry Number.

647016-73-7Downstream Products

647016-73-7Relevant articles and documents

Bornane with integrated push-pull butadienes

Lalk, Michael,Peseke, Klaus,Reinke, Helmut

, p. 552 - 556 (2007/10/03)

The {3-[bis(alkylthio)methylene]-1,7,7-trimethylbicyclo[2.2.1]hept-2-ylidene} malononitriles ((1R,4S)-2, (1S,4R)-2 and (1R,4S)-3) were prepared starting from 1,7,7-trimethyl-bicyclo[2.2.1]hept-2-ylidenemalononitriles ((1R, 4R)-1 and (1S,4S)-1) arisen from (+)-, (-)-camphor. The reaction of (1R,4S)-2 with bromine yielded the (1S,8R)-8,11,11-trimethyl-3-methylthio-5-oxo-4-thiatricyclo-[6.2.1.0 2,7]undeca-2,6-diene-6-carbonitrile (8) after hydrolysis of the initially formed (1S,8R)-6-cyano-8,11,11-trimethyl-3-methylthio-4-thia-tricyclo[6.2.1.0 2,7]undeca-2,6-diene-5-iminium bromide (7). Wiley-VCH Verlag GmbH, 1999.

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