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618113-62-5

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618113-62-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 618113-62-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,1,8,1,1 and 3 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 618113-62:
(8*6)+(7*1)+(6*8)+(5*1)+(4*1)+(3*3)+(2*6)+(1*2)=135
135 % 10 = 5
So 618113-62-5 is a valid CAS Registry Number.

618113-62-5Relevant articles and documents

Enzymatic resolution of 2-substituted tetrahydroquinolines. Convenient approaches to tricyclic quinoxalinediones as potent NMDA-glycine antagonists

Katayama, Seiji,Ae, Nobuyuki,Nagata, Ryu

, p. 4295 - 4299 (1998)

Two approaches leading to the enantiomerically pure tricyclic quinoxalinedione class of NMDA-glycine antagonists using enzymatic resolutions are described. An intermediate, racemic methyl 1,2,3,4- tetrahydroquinoline-2-carboxylate 3, was resolved to (S)-3

Tricyclic Quinoxalinediones: 5,6-Dihydro-1H-pyrroloquinoxaline-2,3-diones and 6,7-Dihydro-1H,5H-pyridoquinoxaline-2,3-diones as Potent Antagonists for the Glycine Binding Site of the NMDA Receptor

Nagata, Ryu,Tanno, Norihiko,Kodo, Toru,Ae, Nobuyuki,Yamaguchi, Hiroshi,et al.

, p. 3956 - 3968 (2007/10/02)

A series of tricyclic quinoxalinediones, 5,6-dihydro-1H-pyrroloquinoxaline-2,3-diones and 6,7-dihydro-1H,5H-pyridoquinoxaline-2,3-diones, were synthesized and was evaluated for their affinity for the glycine binding site of the NMDA receptor using a -5,7-dichlorokynurenic acid binding assay.The six-membered ring-fused tricyclic quinoxalinedione 18g (Ki = 9.9 nM) displayed high affinity for the glycine site.The anilide derivative 20g (Ki = 2.6 nM) was 4-fold more potent than 18g and as potent as L-689,560, one of the most potent glycineantagonists so far prepared.Although the carboxylic acid derivative of the corresponding five-membered ring-fused tricyclic quinoxalinedione 18e (Ki = 7.3 nM) had affinity comparable to that of 18g, the anilide derivative 20e largely decreased in the affinity in contrast to 20g.Enantiomers 23g, 24g, 25g, and 26g were prepared and tested.Only the S enantiomer 25g (Ki = 0.96 nM) retained the affinity among the anilide derivatives, whereas both enantiomers 23g (Ki = 2.3 nM) and 24g (Ki = 9.6 nM) were active among the carboxylic acid derivatives.The origin of the high affinity of carboxylic acid derivatives such as 18e and 18g would be a charge-charge interaction between the anionic carboxylate residues of the compounds and the cationic proton-donor site in the receptor.

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