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197726-17-3

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197726-17-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 197726-17-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,7,2 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 197726-17:
(8*1)+(7*9)+(6*7)+(5*7)+(4*2)+(3*6)+(2*1)+(1*7)=183
183 % 10 = 3
So 197726-17-3 is a valid CAS Registry Number.

197726-17-3Relevant articles and documents

Synthesis of structural analogues of leukotriene B4 and their receptor binding activity

Konno, Mitoshi,Nakae, Takahiko,Sakuyama, Shigeru,Odagaki, Yoshihiko,Nakai, Hisao,Hamanaka, Nobuyuki

, p. 1621 - 1647 (2007/10/03)

Structural analogues of leukotriene B4 (LTB4) were designed based on the plausible conformation of LTB4 (1). Joining C-7-C-9 of the conformer A or B into an aromatic ring system led to the discovery of benzene analogues 2, 4 and 6a. Joining C-4-C-9 of the conformer C or D into an aromatic ring system led to the discovery of analogues 3, 5 and 7. The compounds examined in this study were evaluated as to their inhibition of [3H] LTB4 binding to human neutrophils, and by a secondary intact human neutrophil functional assay for agonist/antagonist activity. The first analogues prepared, compounds 2-7, demonstrated moderate potency in the LTB4, receptor binding assay. The modification of these compounds by the introduction of another substituent into the aromatic ring produced a marked increase in receptor binding (28c, IC50 = 0.020 μM; 38c, IC50 = 0.020 μM; 52a, IC50 = 0.020 μM; 52b, IC50 = 0.018 μM). Most of these structural analogues of LTB4 demonstrated agonist activity. Of the analogues prepared in this study, only compound 57 demonstrated weak LTB4 receptor antagonist activity, at 10 μM.

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