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4-[2-(2-amino-4-oxo-3,4-dihydro-pyrido[3,4-d]pyrimidin-6-yl)-ethyl]-benzoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

528597-17-3

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528597-17-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 528597-17-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,2,8,5,9 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 528597-17:
(8*5)+(7*2)+(6*8)+(5*5)+(4*9)+(3*7)+(2*1)+(1*7)=193
193 % 10 = 3
So 528597-17-3 is a valid CAS Registry Number.

528597-17-3Relevant articles and documents

Synthesis of 7-Aza-5,8,10-trideazafolic acid and its 4-amino-derivative as potential antifolates

Wollein, Guenther,Troschuetz, Reinhard

, p. 1195 - 1200 (2007/10/03)

o-Aminoamide 8, an intermediate in our multistep synthesis of the title compounds was prepared from 1,3-diketone 3. The following condensation of 8 with chloroformamidine-HCl (9) gave pyrido[3,4-d]pyrimidine 10. Dehydratisation of amide 8 led to o-aminonitrile 15, which was cyclocondensated with guanidine (16) to yield pyrido[3,4-d]pyrimidine-2,4-diamine 17. Coupling of the acids 11 and 18 with diethyl L-glutamate (12) and following saponification provided 7-aza-5,8,10-trideazafolic acid 14 and its 4-amino-derivative 20.

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