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54424-12-3

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54424-12-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54424-12-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,4,2 and 4 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 54424-12:
(7*5)+(6*4)+(5*4)+(4*2)+(3*4)+(2*1)+(1*2)=103
103 % 10 = 3
So 54424-12-3 is a valid CAS Registry Number.

54424-12-3Relevant articles and documents

Nucleoside Syntheses, XXI. Synthesis of 5-Methylaminomethyl-2-thiouridine, a Rare Nucleoside from t-RNA

Vorbrueggen, Helmut,Krolikiewicz, Konrad

, p. 1438 - 1447 (2007/10/02)

The synthesis of 5-methylaminomethyl-2-thiouridine (1), a rare nucleoside from t-RNA, starting from the appropriate 2-thiouracil and ribose derivatives is described.During the silyl Hilbert-Johnson nucleoside synthesis with silver perchlorate the tert-butoxycarbonyl (Boc) aminoprotecting group in the 2-thiouracil moiety is removed.This cleavage is due to the intermediate formation of trimethylsilyl perchlorate.Preparative applications of this new type of Lewis acids are mentioned.

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