Cas 905578-34-9,diethyl 3-cyano-6-(4-N,N-dimethylaminophenyl)-2-oxo-2H-pyran-4-ylmalonate

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Check Digit Verification of cas no

The CAS Registry Mumber 905578-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,5,5,7 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 905578-34:
(8*9)+(7*0)+(6*5)+(5*5)+(4*7)+(3*8)+(2*3)+(1*4)=189
189 % 10 = 9
So 905578-34-9 is a valid CAS Registry Number.

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905578-34-9Relevant academic research and scientific papers

Reaction of 6-aryl- or styryl-4-methylsulfanyl-2-oxo-2H-pyrans with active methylene compounds and fluorescence properties of the products

Mizuyama, Naoko,Murakami, Yuka,Nakatani, Takatoshi,Kuronita, Keiko,Kohra, Shinya,Ueda, Kazuo,Hiraoka, Kyoko,Tominaga, Yoshinori

, p. 265 - 277 (2008/09/19)

(Chemical Equation Presented)New 2-pyrone derivatives, dialkyl 3-cyano-6-phenyl-2-oxo-2H-pyran-4-ylmalonates and alkyl 3-cyano-6-phenyl-2-oxo- 2H-pyran-4-ylacetates, which were easily prepared by the reaction of 6-aryl-4-methyl-sulfanyl-2-oxo-2H-pyran-3-c

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