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(Z)-3-(4-Nitro-phenyl)-2-(3-oxo-3H-benzo[f]chromen-1-yl)-acrylic acid butyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128959-72-8

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128959-72-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128959-72-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,5 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 128959-72:
(8*1)+(7*2)+(6*8)+(5*9)+(4*5)+(3*9)+(2*7)+(1*2)=178
178 % 10 = 8
So 128959-72-8 is a valid CAS Registry Number.

128959-72-8Downstream Products

128959-72-8Relevant academic research and scientific papers

SYNTHESIS AND REACTIONS OF BUTYL 2-OXO-2H-NAPHTHOPYRAN-4-ACETATE AND BUTYL 3-OXO-3H-NAPHTHOPYRAN-1-ACETATE

El-Nagdy, Sayed,Soliman, Ahmed Youssef,El-Bassiouny, Fakhry Abd-el Aziz,Bakeer, Hadeer Mohamed,Moustafa, Mohamed Magdy

, p. 35 - 40 (2007/10/02)

The compounds butyl 2-oxo-2H-naphthopyran-4-acetate (III) and butyl 3-oxo-3H-naphthopyran-1-acetate (IV) were synthesized; III, IV reacted with N2H4.H2O and NH2OH.HCl in boiling ethanol to give the naphthyl-2-pentenedioic acid-5-butyl ester-

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