Cas 1287736-31-5,trimethyl 5-(2-hydroxy-4-methyl-5-chlorobenzoyl)benzene-1,2,3-tricarboxylate

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Check Digit Verification of cas no

The CAS Registry Mumber 1287736-31-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,7,7,3 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1287736-31:
(9*1)+(8*2)+(7*8)+(6*7)+(5*7)+(4*3)+(3*6)+(2*3)+(1*1)=195
195 % 10 = 5
So 1287736-31-5 is a valid CAS Registry Number.

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1287736-31-5Relevant academic research and scientific papers

Organocatalyzed reactions involving 3-formylchromones and acetylenedicarboxylates: Efficient synthesis of functionalized benzophenones and polysubstituted xanthones

Terzidis, Michael A.,Tsiaras, Vassilios G.,Stephanidou-Stephanatou, Julia,Tsoleridis, Constantinos A.

, p. 97 - 103 (2011)

Organocatalyzed reactions between chromones and acetylenedicarboxylates leading either to xanthone derivatives or to functionalized benzophenones are described. The outcome of the reactions was found to depend both on the nature of the chromone substituen

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