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3-(2,4-Dinitro-phenyl)-4-oxo-1,6,7,8-tetrahydro-4H-pyrido[1,2-a]pyrimidine-9-carbaldehyde is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

71165-50-9

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71165-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71165-50-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,1,6 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 71165-50:
(7*7)+(6*1)+(5*1)+(4*6)+(3*5)+(2*5)+(1*0)=109
109 % 10 = 9
So 71165-50-9 is a valid CAS Registry Number.

71165-50-9Downstream Products

71165-50-9Relevant academic research and scientific papers

Nitrogen Bridgehead Compounds. Part 30. Vilsmeier-Haack Formylation of 6,7,8,9-Tetrahydro-4H-pyridopyrimidin-4-ones

Horvath, Agnes,Hermecz, Istvan,Vasvari-Debreczy, Lelle,Simon, Kalman,Pongor-Csakvari, Marianne,et al.

, p. 369 - 378 (2007/10/02)

Depending on the substituents at C(3) and on the reaction conditions, Vilsmeier-Haack formylation (POCl3-DMF) of 6,7,8,9-tetrahydro-4H-pyridopyrimidin-4-ones (I) led to 9-(dimethylaminomethylene)- or 9-(ethoxymethylene)-6,7,8,9-tetrahydro-4H-pyrido

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