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87769-45-7

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87769-45-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87769-45-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,6 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87769-45:
(7*8)+(6*7)+(5*7)+(4*6)+(3*9)+(2*4)+(1*5)=197
197 % 10 = 7
So 87769-45-7 is a valid CAS Registry Number.

87769-45-7Downstream Products

87769-45-7Relevant articles and documents

Synthesis of 1,3-dioxin-4-one Derivatives

Sato, Masayuki,Ogasawara, Hiromichi,Oi, Keiichi,Kato, Tetsuzo

, p. 1896 - 1901 (2007/10/02)

A facile and general synthesis of 2,2-dimethyl-1,3-dioxin-4-one derivatives (1) is reported.Treatment of β-keto acids with a mixture of isopropenyl acetate and conc. sulfuric acid gave 2,2-dimethyl-1,3-dioxin-4-ones (1).Similar treatment of tert-butyl esters of β-keto acids also gave 1.KEYWORDS - 2,2-dimethyl-1,3-dioxin-4-one derivative; diketene-acetone adduct; diketene; acylketene; β-keto acid; β-keto ester

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