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1,3-dimethyl-6-nitro-5-triphenylphosphoranylideneaminopyrido[2,3-d]pyrimidine-2,4,7(1H,3H,8H)-trione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

680211-20-5

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680211-20-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 680211-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,0,2,1 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 680211-20:
(8*6)+(7*8)+(6*0)+(5*2)+(4*1)+(3*1)+(2*2)+(1*0)=125
125 % 10 = 5
So 680211-20-5 is a valid CAS Registry Number.

680211-20-5Relevant academic research and scientific papers

Ring closure reactions of 5-azidopyrido[2,3-d]pyrimidinetriones to isoxazolo- and oxadiazolopyrido[2,3-d]pyrimidinetriones

Van Tinh, Dang,Stadlbauer, Wolfgang

experimental part, p. 1695 - 1699 (2009/09/06)

(Chemical Equation Presented) Thermal decomposition of 5-azidopyrido[2,3-d] pyrimidines 2 and 7 having reactive ortho-substituents such as a formyl or a nitro group yielded isoxazolo[3′,4′:4,5]pyrido[2,3-d]pyrimidines 3 or oxadiazolo-[3′,4′:4,5]pyrido[2,3-d]pyrimidines 9. The reaction conditions of the azide decomposition were studied by differential scanning calorimetry (DSC). In addition, desoxygenation of N-oxides 9 to oxadiazoles 10 and regioselective reduction of azides 7 to amines 8 were studied.

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