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97634-16-7

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97634-16-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97634-16-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,6,3 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 97634-16:
(7*9)+(6*7)+(5*6)+(4*3)+(3*4)+(2*1)+(1*6)=167
167 % 10 = 7
So 97634-16-7 is a valid CAS Registry Number.

97634-16-7Relevant articles and documents

Stereomutation of conformational enantiomers of 9-isopropyl-9- formylfluorene and related acyl derivatives

Casarini, Daniele,Lunazzi, Lodovico,Mazzanti, Andrea

, p. 6382 - 6385 (2008)

(Figure Presented) Low-temperature NMR spectra show that the title compound exists as a pair of conformational enantiomers, generated by the restricted rotation about the C9-Pri bond, the corresponding interconversion barrier being 6.9 kcal mol-1. This interpretation is supported by theoretical (MM and DFT) calculations and by the experimental determination of the analogous barriers occurring in the related MeC=O and ButC=O derivatives.

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