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1245504-98-6

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1245504-98-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1245504-98-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,5,5,0 and 4 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1245504-98:
(9*1)+(8*2)+(7*4)+(6*5)+(5*5)+(4*0)+(3*4)+(2*9)+(1*8)=146
146 % 10 = 6
So 1245504-98-6 is a valid CAS Registry Number.

1245504-98-6Relevant articles and documents

Preheated fly-ash catalyzed aldol condensation: Efficient synthesis of chalcones and antimicrobial activities of some 3-thienyl chalcones

Arulkumaran, Ranganathan,Vijayakumar, Sambandhamoorthy,Sakthinathan, S. Pazhanivel,Kamalakkannan, Dakshnamoorthy,Ranganathan, Kaliyaperumal,Suresh, Ramamoorthy,Sundararajan, Rajasekaran,Vanangamudi, Ganesan,Thirunarayanan, Ganesamoorthy

, p. 1684 - 1690 (2013/09/24)

In the present study we have prepared a series of some chalcones using solvent - free Aldol - condensation by microwave irradiation. The yields of the ketones are more than 60%. The synthesised chalcones were characterized by their analytical, physical and spectral data. The antimicrobial activities of substituted styryl 3-thienyl ketones have been studied using Bauer-Kirby method.

Unexpected lactonization accompanying addition of ethyl acetoacetate to chalcones derived from 3-acetylthiophene

Budak, Yakup,Findik, Esra

scheme or table, p. 1255 - 1261 (2012/01/03)

Chalcone derivatives containing thiophene ring were prepared by the condensation of 3-acetylthiophene with aromatic aldehydes in excellent yields. The addition of ethyl acetoacetate to chalcone derivatives 3a-3h in the presence of solid NaOH in CH2Cl2 resulted in the formation of the mixture of bicyclic lactone derivatives 5a-5h and 6-(ethoxycarbonyl) cyclohexenone derivatives 6a-6h.

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