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17628-74-9

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17628-74-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17628-74-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,2 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17628-74:
(7*1)+(6*7)+(5*6)+(4*2)+(3*8)+(2*7)+(1*4)=129
129 % 10 = 9
So 17628-74-9 is a valid CAS Registry Number.

17628-74-9Relevant articles and documents

Single-Step Modular Synthesis of Unsaturated Morpholine N-Oxides and Their Cycloaddition Reactions

Son, Jongwoo,Kim, Ki Hwan,Mo, Dong-Liang,Wink, Donald J.,Anderson, Laura L.

supporting information, p. 3059 - 3063 (2017/03/14)

A single-flask procedure for the generation of α-keto-N-alkenylnitrones through a Chan–Lam coupling and subsequent spontaneous 6π electrocyclization of these intermediates for the synthesis of 2H-1,4-oxazine N-oxides has been developed for a variety of α-ketooximes and alkenylboronic acids. This transformation provides a new approach to C-substituted unsaturated morpholine derivatives that are poised to undergo further functionalization for the preparation of a diverse array of novel heterocyclic structures. The scope of the new method for the synthesis of 2H-1,4-oxazine N-oxides is discussed, in addition to initial studies describing the cycloaddition reactivity of these new heterocyclic intermediates.

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