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278605-81-5

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278605-81-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 278605-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,8,6,0 and 5 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 278605-81:
(8*2)+(7*7)+(6*8)+(5*6)+(4*0)+(3*5)+(2*8)+(1*1)=175
175 % 10 = 5
So 278605-81-5 is a valid CAS Registry Number.

278605-81-5Downstream Products

278605-81-5Relevant articles and documents

Type 2 intramolecular nitroso Diels-Alder reaction. Synthesis and structure of bridgehead oxazinolactams.

Sparks,Vargas,Shea

, p. 1473 - 1475 (2000)

[reaction--see text] The type 2 intramolecular Diels-Alder cycloaddition utilizing N-acylnitroso dienophiles provides an efficient entry into bridged oxazinolactams. In contrast to the bimolecular counterpart, the reaction is completely regioselective. Structural characterization of the cycloadducts allows for evaluation of the olefin distortion and the degree of pyramidalization of the bridgehead oxazinolactam.

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