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1054661-52-7

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1054661-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1054661-52-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,4,6,6 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1054661-52:
(9*1)+(8*0)+(7*5)+(6*4)+(5*6)+(4*6)+(3*1)+(2*5)+(1*2)=137
137 % 10 = 7
So 1054661-52-7 is a valid CAS Registry Number.

1054661-52-7Relevant articles and documents

Photoinduced electron transfer on ?2-sheet cyclic peptides

Sasaki, Hiroshi,Makino, Maki,Sisido, Masahiko,Smith, Trevor A.,Ghiggino, Kenneth P.

, p. 10416 - 10423 (2001)

Gramicidin S analogues that contain a single pyrenyl group and a single p-nitrophenyl group at different positions were synthesized. Photoinduced electron transfer (ET) from an excited pyrenyl group located at the fourth position to a nitrophenyl group located at five different positions was investigated on the ?2-sheet chains of the cyclic peptides. The observed ET rate constants displayed a complex dependence on the number of spacer units or on the edge-to-edge distance between the two aromatic groups. The ET rate constants, however, showed a reasonable linear relationship with the equivalent ??-distances calculated from the Beratan-Onuchic tunneling pathway model, if through-hydrogen-bond ET was taken into account. The results support the applicability of the tunneling pathway model on both helix and ?2-sheet model peptides.

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