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65977-63-1

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65977-63-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 65977-63-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,9,7 and 7 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 65977-63:
(7*6)+(6*5)+(5*9)+(4*7)+(3*7)+(2*6)+(1*3)=181
181 % 10 = 1
So 65977-63-1 is a valid CAS Registry Number.

65977-63-1Downstream Products

65977-63-1Relevant articles and documents

Reactions of Five-Membered Mesoionic Heterocycles with o-Quinonoid Compounds, V. 1,3-Oxazolium-5-olates and 1,3-Thiazolium-5-olates

Friedrichsen, Willy,Schwarz, Ingo,Epe, Bernd,Hesse, Karl-Friedrich

, p. 622 - 631 (2007/10/02)

1,3-Oxazolium-5-olates (1) and 1,3-thiazolium-5-olates (11) react with o-benzoquinones (3) and α-naphthoquinone to give adducts (4, 5, 6, 15) which can formally be derived from ketene valence tautomers of 1 and 11. 9,10-Phenanthrenequinone and 1a yield a compound (10) which possibly results from an initially formed adduct (7) with subsequent loss of CO2.Consistent with this view is a product (14) of the reaction between 9,10-phenanthrenequinone and 11.The structure of 14 has been determined by X-ray crystallography. - Keywords: o-Quinonoid Compounds, Mesoionic Heterocycles

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