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84243-59-4

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84243-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84243-59-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,2,4 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 84243-59:
(7*8)+(6*4)+(5*2)+(4*4)+(3*3)+(2*5)+(1*9)=134
134 % 10 = 4
So 84243-59-4 is a valid CAS Registry Number.

84243-59-4Relevant articles and documents

One-pot preparation of 6-substituted 3(2H)-pyridazinones from ketones

Coates,McKillop

, p. 334 - 342 (2007/10/02)

A one-pot process for the preparation of 6-phenyl-3(2H)-pyridazinone from acetophenone and glyoxylic acid has been investigated and shown to have wide utility in the preparation of 6- and 5,6-substituted 3(2H)-pyridazinones. Limitations to the process encountered with 2'-hydroxyacetophenone and with basic hetero-aromatic ketones have been overcome, and the processes described offer the rapid and efficient synthesis of many 6-substituted pyridazinones from readily available ketones.

Cardiotonic Agents. 2. Synthesis and Structure-Activity Relationships of 4,5-Dihydro-6--3(2H)-pyridazinones: A New Class of Positive Inotropic Agents

Sircar, Ila,Duell, Bradley L.,Bobowski, George,Bristol, James A.,Evans, Dale B.

, p. 1405 - 1413 (2007/10/02)

A series of 4,5-dihydro-6--3(2H)-pyridazinones and related compounds were synthesized and evaluated for positive inotropic activity.Most members of this series produced dose-related increases in myocardial contractility that we

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