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91133-04-9

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91133-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91133-04-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,3 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91133-04:
(7*9)+(6*1)+(5*1)+(4*3)+(3*3)+(2*0)+(1*4)=99
99 % 10 = 9
So 91133-04-9 is a valid CAS Registry Number.

91133-04-9Relevant articles and documents

One-step conversion of aldehydes to oxazolines and 5,6-dihydro-4H-1,3-oxazines using 1,2- and 1,3-azido alcohols

Badiang, Jennifer G.,Aube, Jeffrey

, p. 2484 - 2487 (1996)

The reactions of 1,2- and 1,3-hydroxy azides with aldehydes under acidic conditions were examined. A variety of Lewis acids were examined, of which BF3·OEt2 was found the most convenient. Trimethylsilyl ether derivatives of the alcohols could also be reacted using trimethylsilyl triflate as the promoter. Twenty-five examples that proceed in moderate to quantitative yields are reported.

Efficient oxidative conversion of aldehydes to 2-substituted oxazolines and oxazines using (diacetoxyiodo)benzene

Karade, Nandkishor N.,Tiwari, Girdharilal B.,Gampawar, Sumit V.

, p. 1921 - 1924 (2008/03/27)

An efficient synthesis of 2-substituted oxazolines from aldehydes and 2-amino alcohol using (diacetoxyiodo)benzene as an oxidant, is reported. (Diacetoxyiodo)benzene acts as a mild dehydrogenating agent to convert the initially formed oxazolidine from ald

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