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121638-08-2

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121638-08-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121638-08-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,3 and 8 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 121638-08:
(8*1)+(7*2)+(6*1)+(5*6)+(4*3)+(3*8)+(2*0)+(1*8)=102
102 % 10 = 2
So 121638-08-2 is a valid CAS Registry Number.

121638-08-2Downstream Products

121638-08-2Relevant articles and documents

Synthesis and Conformational Analysis of Epindolidione-Derived Peptide Models for β-Sheet Formation

Kemp, D. S.,Bowen, Benjamin R.,Muendel, Christopher C.

, p. 4650 - 4657 (2007/10/02)

Synthesis of 2,8-diaminoepindolidione (2,8-diaminodibenzonaphthyridine-6,12(5,11H)-dione) in 19percent yield from p-nitroaniline is reported, as well as further conversion to 2,8-bis(Boc-L-Pro-Xxx)epindolidione (Xxx=Gly, D-Ala) and then to 2,8-bis(OC(Yyy-Zzz-NMe2)-L-Pro-Xxx)epindolidione (Yyy=Gly, L-Ala, D-Ala; Zzz=Gly, L-Phe, D-Phe).The β-turn-forming tendencies of the series 2,8-bis(X-L-Pro-D-Ala)epindolidione, where X=Ac, Boc, and COGlyOEt, are assigned from 1H NMR evidence.

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