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329897-76-9

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329897-76-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 329897-76-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,9,8,9 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 329897-76:
(8*3)+(7*2)+(6*9)+(5*8)+(4*9)+(3*7)+(2*7)+(1*6)=209
209 % 10 = 9
So 329897-76-9 is a valid CAS Registry Number.

329897-76-9Relevant articles and documents

Facile methods for the synthesis of 5-formylcytidine

Abdel Rahman, Adel A.-H.,Wada, Takeshi,Saigo, Kazuhiko

, p. 1061 - 1063 (2007/10/03)

5′-O-Protected 5-methylcytidine 3 was oxidized with Na2S2O8 to give a mixture of the corresponding 5-(hydroxymethyl)- and 5-formylcytidine derivatives, 4 and 5. The hydroxymethyl group of 4 was further oxidized to a formyl group by treatment with ceric(IV) ammonium nitrate (CAN). Alternatively, 2′,3′,5′-O-protected 5-(hydroxymethyl)cytidine 10 was directly oxidized with CAN to give the desired 5-formylcytidine derivative 11. After removal of the protecting groups in each intermediate, 5-formylcytidine (6) was obtained in good yield.

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