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223648-45-1

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223648-45-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223648-45-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,6,4 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 223648-45:
(8*2)+(7*2)+(6*3)+(5*6)+(4*4)+(3*8)+(2*4)+(1*5)=131
131 % 10 = 1
So 223648-45-1 is a valid CAS Registry Number.

223648-45-1Relevant articles and documents

Synthesis and dopamine receptor modulating activity of novel peptidomimetics of L-prolyl-L-leucyl-glycinamide featuring α,α- disubstituted amino acids

Evans, Margaret C.,Pradhan, Ashish,Venkatraman, Shankar,Ojala, William H.,Gleason, William B.,Mishra, Ram K.,Johnson, Rodney L.

, p. 1441 - 1447 (2007/10/03)

In the present study, L-prolyl-L-leucyl-glycinamide (1) peptidomimetics 3a-3d and 4a-4d were synthesized utilizing α,α-disubstituted amino acids. These analogues were designed to explore the conformational effects of constraints at the φ3 and ψ3 torsion angles. Constrained conformations were verified by the use of X-ray crystallography and circular dichroism. The effects of Pro-Leu-Gly-NH2 analognes 3a-3d and 4a-4d on enhancing rotational behavior induced by apomorphine in the 6-hydroxydopamine-lesioned animal models of Parkinson's disease were studied. The ability of these peptidomimetics to increase the binding of agonist N-propylnorapomorphine (NPA) to the dopamine D2 receptor was also examined. Extended analogue Pro- Leu-Deg-NH2 was the most active compound of this series. It was 10 times more potent and almost 2 times more effective than 1 in increasing apomorphine-induced rotations (56 ± 15% at 1.0 mg/kg ip) and in enhancing [3H]NPA specific binding (40%).

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