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227275-21-0

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227275-21-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 227275-21-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,7,2,7 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 227275-21:
(8*2)+(7*2)+(6*7)+(5*2)+(4*7)+(3*5)+(2*2)+(1*1)=130
130 % 10 = 0
So 227275-21-0 is a valid CAS Registry Number.

227275-21-0Relevant articles and documents

Study on selectin blocker. 8. Lead discovery of a non-sugar antagonist using a 3D-pharmacophore model

Hiramatsu, Yasuyuki,Tsukida, Takahiro,Nakai, Yoshiyuki,Inoue, Yoshimasa,Kondo, Hirosato

, p. 1476 - 1483 (2000)

We have developed a pharmacophore model of a ligand/E-selectin complex to screen drug candidates for selectin blockers. In a series of sugar mimetic studies of the E-selectin ligand, sialyl Lewis X (sLe(x)), we have already found a potent compound, a sulfated Le(x) analogue (1), and also have proposed how compound I binds to E-selectin (Tsujishita, H.; Hiramatsu, Y.; Kondo, N.; Ohmoto, H.; Kondo, H.; Kiso, M.; Hasegawa, A. J. Med. Chem. 1997, 40, 362-369). To find drug candidates that fit into the binding pocket of E- selectin, we constructed an original 3D-pharmacophore model from structural information of a compound 1/E-selectin complex model and screened lead compounds for selectin blockers using a commercially available database ACD- 3D. As a result, we discovered a lead compound (2) containing good selectin inhibitory activity, and in addition, we succeeded to preliminarily optimize it to a more active lead compound (3) with micromolar IC50 values, based on the 3D-pharmacophore model investigation. This methodology using the 3D- pharmacophore model could be applicable as a pre-screen system for selectin blockers.

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