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73877-69-7

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73877-69-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73877-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,7 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 73877-69:
(7*7)+(6*3)+(5*8)+(4*7)+(3*7)+(2*6)+(1*9)=177
177 % 10 = 7
So 73877-69-7 is a valid CAS Registry Number.

73877-69-7Relevant articles and documents

Crystal Structure of 3-(4-Methoxy-benzylidene)-isothiochroman-4-one

Akkurt,YIldIrIm,Kerbal,Bennani,Hadda, T. Ben,Chohan,McKee, Vickie

, p. 165 - 168 (2010)

The title compound, 3-(4-methoxy-benzylidene)-isothiochroman-4-one (C 17H14O2S) was prepared from the reaction of isothiochroman-4-one with benzaldehyde in the presence of small amount of HCl. The structure of the synthesised compound was determined by IR, 1H NMR and X-ray crystallography. The structure was solved in monoclinic, space group P21/n with a = 3.9773 (7) A, b = 10.918 (2) A, c = 30.609 (6) A, β = 90.615 (3)°, V = 1329.1 (4) A3, Z = 4 and with R int = 0.047. The bicyclic ring of isothiochroman-4-one moiety does not adopt a planar geometry. The molecular conformation is stable via C10-H???O1 and C16- H???S1 intramolecular hydrogen-bonding interactions. These contacts involve molecules in an extended two-dimensional sheet to the bc plane.

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