Cas 1449657-87-7,C15H9ClO2

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Check Digit Verification of cas no

The CAS Registry Mumber 1449657-87-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,9,6,5 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1449657-87:
(9*1)+(8*4)+(7*4)+(6*9)+(5*6)+(4*5)+(3*7)+(2*8)+(1*7)=217
217 % 10 = 7
So 1449657-87-7 is a valid CAS Registry Number.

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1449657-87-7Relevant academic research and scientific papers

In(III)/PhCO2H binary acid catalyzed tandem [2 + 2] cycloaddition and nazarov reaction between alkynes and acetals

Zhu, Lihui,Xi, Zhi-Guo,Lv, Jian,Luo, Sanzhong

, p. 4496 - 4499 (2013)

A facile tandem [2 + 2] cycloaddition and Nazarov reaction has been developed. The combination of In(OTf)3 and benzoic acid was found to synergistically promote the coupling of alkynes and acetals to form 2,3-disubstituted indanones in excellent yield and diastereoselectivity.

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