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136247-26-2

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136247-26-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136247-26-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,2,4 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 136247-26:
(8*1)+(7*3)+(6*6)+(5*2)+(4*4)+(3*7)+(2*2)+(1*6)=122
122 % 10 = 2
So 136247-26-2 is a valid CAS Registry Number.

136247-26-2Relevant articles and documents

Design, synthesis and biological evaluation of bivalent ligands against A 1-D 1 receptor heteromers

Shen, Jian,Zhang, Lei,Song, Wan-Ling,Meng, Tao,Wang, Xin,Chen, Lin,Feng, Lin-Yin,Xu, Ye-Chun,Shen, Jing-Kang

, p. 441 - 452 (2013/08/25)

Aim:To design and synthesize bivalent ligands for adenosine A 1-dopamine D 1 receptor heteromers (A 1-D 1 R), and evaluate their pharmacological activities.Methods:Bivalent ligands and their corresponding A 1 R monovalent ligands were designed and synthesized. The affinities of the bivalent ligands for A 1 R and D 1 R in rat brain membrane preparation were examined using radiolabeled binding assays. To demonstrate the formation of A 1-D 1 R, fluorescence resonance energy transfer (FRET) was conducted in HEK293 cells transfected with D 1-CFP and A 1-YFP. Molecular modeling was used to analyze the possible mode of protein-protein and protein-ligand interactions.Results:Two bivalent ligands for A 1 R and D 1 R (20a, 20b), as well as the corresponding A 1 R monovalent ligands (21a, 21b) were synthesized. In radiolabeled binding assays, the bivalent ligands showed affinities for A 1 R 10-100 times higher than those of the corresponding monovalent ligands. In FRET experiments, the bivalent ligands significantly increased the heterodimerization of A1R and D 1 R compared with the corresponding monovalent ligands. A heterodimer model with the interface of helixes 3, 4, 5 of A1R and helixes 1, 6, 7 from D 1 R was established with molecular modeling. The distance between the two ligand binding sites in the heterodimer model was approximately 48.4 ?, which was shorter than the length of the bivalent ligands.Conclusion:This study demonstrates the existence of A 1-D 1 R in situ and a simultaneous interaction of bivalent ligands with both the receptors.

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