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107643-22-1

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107643-22-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 107643-22-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,7,6,4 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 107643-22:
(8*1)+(7*0)+(6*7)+(5*6)+(4*4)+(3*3)+(2*2)+(1*2)=111
111 % 10 = 1
So 107643-22-1 is a valid CAS Registry Number.

107643-22-1Downstream Products

107643-22-1Relevant articles and documents

SYNTHESIS AND STEREOCHEMISTRY OF FLUORENE-9 AND BENZOFLUORENE-11-SPIRO-5'-DIOXANES

Hahn, Witold E.,Sokolowska, Alicja

, p. 781 - 786 (2007/10/02)

Fluorene-9 and benzofluorene-11-spiro-5'-dioxanes were obtained by treating 9,9-bis(hydroxymethyl)fluorene or 11,11-bis(hydroxymethyl)-11H-benzofluorene with aromatic aldehydes.The influence of aromatic system in position 5 and aryl in position 2 on chemical shifts of protons in 1,3-dioxane ring were determined by means of 1H NMR spectra.Dioxanes, derivatives of benzofluorene were obtained in the form of a mixture of cis and trans isomers from which cis isomers were isolated in the pure form.

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