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5a-pentyl-5a,6,7,8,9,11-hexahydropyrido[2,1-b][1,3]benzoxazin-9-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

220247-15-4

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220247-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220247-15-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,2,4 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 220247-15:
(8*2)+(7*2)+(6*0)+(5*2)+(4*4)+(3*7)+(2*1)+(1*5)=84
84 % 10 = 4
So 220247-15-4 is a valid CAS Registry Number.

220247-15-4Upstream product

220247-15-4Relevant academic research and scientific papers

Synthesis of 1-azaspirocycles via Lewis acid-mediated spirocyclization of cyclic N-acyl-N,O-acetals

Ito,Yamazaki,Kibayashi

, p. 1506 - 1510 (2001)

A new approach to 1-azaspirocycles has been developed starting from cyclic N-acyl-N,O-acetals. This sequence involves olefin-iminium cyclization mediated by Lewis acids leading to the spirocyclization products including the chlorinated products and the olefinic products. Mixtures of these products underwent catalytic hydrogenation and reductive dechlorination to produce the 1-azaspirans.

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