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139050-91-2

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139050-91-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139050-91-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,5 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139050-91:
(8*1)+(7*3)+(6*9)+(5*0)+(4*5)+(3*0)+(2*9)+(1*1)=122
122 % 10 = 2
So 139050-91-2 is a valid CAS Registry Number.

139050-91-2Downstream Products

139050-91-2Relevant articles and documents

Reactions of 1,1-Disubstituted Alkenes with Acetoacetamides and Molecular Oxygen in the Presence of Manganese(III) Acetate

Qian, Chang-Yi,Nishino, Hiroshi,Kurosawa, Kazu

, p. 3557 - 3564 (2007/10/02)

The reactions of 1,1-disubstituted ethenes with acetoacetamide or N-substituted acetoacetamides, and molecular oxygen in the presence of manganese(III) acetate gave a mixture of c-4- and t-4-carbamoyl-3-methyl-1,2-dioxan-r-3-ols in good yields.Effects of substituents in the alkenes as welle as in the carbamoyl group in the acetoacetamides were observed.Stereochemistry and the reactivity of the 4-carbamoyl-3-methyl-1,2-dioxan-3-ols are discussed.

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