256521-61-6 Usage
Chemical class
Pyrimidine compounds
Charge
Positively charged ion at the 8th position
Morpholine groups
Two six-membered heterocyclic rings with two nitrogen atoms each
Methyl groups
Two methyl groups present in the structure
Pyrido ring
A six-membered aromatic ring fused to a pyrimidine ring
Dioxo groups
Two oxygen atoms double-bonded to adjacent carbon atoms
Potential applications
Medicinal chemistry and drug development due to unique structure and functional groups
Molecular structure
Complex and highly specific, consisting of a tetrahydropyrido[2,3-d]pyrimidin-8-ium core with various substituents
Heterocyclic rings
Presence of nitrogen atoms in the ring structure
Tautomerism
The compound may exhibit tautomerism due to the presence of multiple heterocyclic rings and functional groups
Check Digit Verification of cas no
The CAS Registry Mumber 256521-61-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,5,2 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 256521-61:
(8*2)+(7*5)+(6*6)+(5*5)+(4*2)+(3*1)+(2*6)+(1*1)=136
136 % 10 = 6
So 256521-61-6 is a valid CAS Registry Number.
256521-61-6Relevant articles and documents
Synthesis of 5-mono- and 5,7-diamino-pyrido[2,3-d]-pyrimidinediones with potential biological activity by regioselective amination
Van Tinh, Dang,Stadibauer, Wolfgang
, p. 821 - 829 (2008/09/21)
(Chemical Equation Presented) 5-Alkyl/arylamino- and 5,7-dialkyl/arylamino- pyrido[2,3-d]pyrimidine-2,4-diones (4,5, 7-9) were prepared from the corresponding 5,7-dichloro-pyrido[2,3-d]pyrimidine-2,4-diones 2 with aliphatic and aromatic amines 3 and 6 in a regioselective reaction. The 7-monoazides 10, obtained by azidation of 5-amino-7-chloro derivatives 4, were converted to iminophosphoranes by reaction with triphenylphosphane via Staudinger reaction. Hydrolysis with aqueous acetic acid produced in one step 7-unsubstituted-amino- pyrido[2,3-d]pyrimidine-2,4-diones 12. In a similar amination reaction, 5-chloropyrido[2,3-d]pyrimidine-2,4,7-triones 13 were aminated and formylated to 5-alkyl/arylamino-6-formyl derivatives 14-16 in a combined one-step-reaction with bulky arylamines or alkylamines in the presence of dimethylformamide.