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111869-44-4

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111869-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111869-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,8,6 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 111869-44:
(8*1)+(7*1)+(6*1)+(5*8)+(4*6)+(3*9)+(2*4)+(1*4)=124
124 % 10 = 4
So 111869-44-4 is a valid CAS Registry Number.

111869-44-4Relevant articles and documents

Synthesis of 7-Deaza-2',3'-dideoxyguanosine by Deoxygenation of Its 2'-Deoxy-β-D-ribofuranoside

Seela, Frank,Muth, Heinz-Peter

, p. 215 - 220 (2007/10/02)

7-Deaza-2',3'-dideoxyguanosine (4) was prepared by Barton deoxygenation from 7-deaza-2'-deoxyguanosine (1).Protection of the 5'-hydroxy group was accomplished by the 4,4'-dimethoxytriphenylmethyl residue.The 2-amino function was protected either with the same group or the dimethylaminomethylene residue.Assignment of 1H- and 13C-NMR signals of the 2',3'-dideoxy-β-D-glycero-pentofuranosyl moiety of 4 was made on the basis of 2D-NMR spectra.In contrast to 2',3'-dideoxyguanosine compound 4 has an extremely stable N-glycosylic bond towards proton-catalyzed hydrolysis.

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