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23589-13-1

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23589-13-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23589-13-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,5,8 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23589-13:
(7*2)+(6*3)+(5*5)+(4*8)+(3*9)+(2*1)+(1*3)=121
121 % 10 = 1
So 23589-13-1 is a valid CAS Registry Number.

23589-13-1Downstream Products

23589-13-1Relevant articles and documents

Anomers of Tubercidin Derivatives with 2-Methylthio and N4-(Δ2-Isopentenyl) Residues

Seela, Frank,Bussmann, Werner

, p. 1972 - 1980 (2007/10/02)

Starting with the chloronucleosides 3a and 4a the anomers 1 and 2 of 2-(methylthio)tubercidin were prepared.They are desulfurized to tubercidin (3c) and its α-anomer 4c.Desulfurization of the N4-(Δ2-isopentenyl) compounds 3b and 4b yields 3d and 4d; due to hydrogenation the by-products 3e and 4e are formed.Isopentylation of tubercidin followed by Dimroth rearrangement also gives N4-(Δ2-isopentenyl)tubercidin (3d).From the 1J(C,H) coupling constants of the glyconic moiety the sequence of the 13C signals of the α-anomer 2 was deduced.The 3J(C-6,1'-H) couplings of tubercidins gave the torsion angle χ which is found to be in the anti region.

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