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1H-Pyrazole-3-acetic acid, 4,5-dihydro-4-[[(4-hydroxyphenyl)amino]methylene]-5-oxo-1-phenyl-, ethyl ester, (4Z)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

660441-22-5

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660441-22-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 660441-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,0,4,4 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 660441-22:
(8*6)+(7*6)+(6*0)+(5*4)+(4*4)+(3*1)+(2*2)+(1*2)=135
135 % 10 = 5
So 660441-22-5 is a valid CAS Registry Number.

660441-22-5Downstream Products

660441-22-5Relevant academic research and scientific papers

Transformations of alkyl (5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)acetates into 5-heteroaryl-3-oxo-2-phenyl-3,5-dihydro-2H-pyrazolo[4,3-c] pyridine-7-carboxylates

Bevk, David,Jak?e, Renata,Svete, Jurij,Golobi?, Amalija,Goli?, Ljubo,Stanovnik, Branko

, p. 197 - 223 (2007/10/03)

Alkyl [(Z)-4-dimethylaminomethylidene-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl] acetate (4) was transformed with N- and C-nucleophiles into alkyl [4-(substituted amino)methylidene-4,5-dihydro-1H-pyrazol-3- yl] acetates (7) and alkyl (4-heteroarylmethylidene-4,5-dihydro-1H -pyrazol-3-yl)acetates (8), respectively. Compounds (7) cyclize by heating with DMFDMA in DMF into 2H-pyrazolo[4,3-c]pyridine-7-carboxylates (9).

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