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1245504-96-4

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1245504-96-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1245504-96-4 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 6 respectively.
Calculate Digit Verification of CAS Registry Number 1245504-96:
(9*1)+(8*2)+(7*4)+(6*5)+(5*5)+(4*0)+(3*4)+(2*9)+(1*6)=144
144 % 10 = 4
So 1245504-96-4 is a valid CAS Registry Number.

1245504-96-4Relevant articles and documents

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

Budak, Yakup,Findik, Esra

, p. 1255 - 1261 (2011)

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.

Potassium tert-butoxide catalyzed synthesis and characterization of novel 3-aryl-3-(phenylthio)-1-(thiophen-3-yl)propan-1-one derivatives

Budak, Yakup

scheme or table, p. 341 - 344 (2012/04/23)

A series of thiophenyl-containing 3-thiophene derivatives (4a-4i) were prepared via the reaction of chalcone-analogua compounds (3a-3i) and thiophenol in the presence of catalytic amount of KOBu-t in CH2Cl2 with moderate to high yiel

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