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444989-47-3

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444989-47-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 444989-47-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,4,9,8 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 444989-47:
(8*4)+(7*4)+(6*4)+(5*9)+(4*8)+(3*9)+(2*4)+(1*7)=203
203 % 10 = 3
So 444989-47-3 is a valid CAS Registry Number.

444989-47-3Downstream Products

444989-47-3Relevant articles and documents

Facile assembly of fused benzofuro-heterocycles

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Page/Page column 8; 15, (2009/04/24)

This invention concerns the synthesis of polycyclic structural components of pharmacological compounds, including the synthesis of fused benzofuro-heterocycles, through selective palladium-catalyzed cross-coupling and intramolecular cyclization.

A concise synthesis of all four possible benzo[4,5]furopyridines via palladium-mediated reactions.

Yue, Wen Song,Li, Jie Jack

, p. 2201 - 2203 (2007/10/03)

[reaction: see text] By taking advantage of the alpha- and gamma-activation of chloropyridines as well as palladium-mediated reactions, all four possible benzo[4,5]furopyridine tricyclic heterocycles, benzo[4,5]furo[2,3-b]pyridine, benzo[4,5]furo[2,3-c]py

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