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25299-21-2

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25299-21-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25299-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,2,9 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 25299-21:
(7*2)+(6*5)+(5*2)+(4*9)+(3*9)+(2*2)+(1*1)=122
122 % 10 = 2
So 25299-21-2 is a valid CAS Registry Number.

25299-21-2Downstream Products

25299-21-2Relevant academic research and scientific papers

DMAP-Catalyzed Reaction of Diethyl 1,3-Acetonedicarboxylate with 2-Hydroxybenzylideneindenediones: Facile Synthesis of Fluorenone-Fused Coumarins

Shkoor, Mohanad,Bayari, Raghad

, p. 795 - 799 (2021)

The base-catalyzed reaction of diethyl 1,3-acetonedicarboxylate with 2-hydroxybenzylidene indenediones was studied. The reaction provides a facile and expeditious protocol for the synthesis of natural product inspired fluorenone-fused coumarins in good to

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