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73971-78-5

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73971-78-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73971-78-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,7 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 73971-78:
(7*7)+(6*3)+(5*9)+(4*7)+(3*1)+(2*7)+(1*8)=165
165 % 10 = 5
So 73971-78-5 is a valid CAS Registry Number.

73971-78-5Downstream Products

73971-78-5Relevant articles and documents

Nucleosides. 115. Reaction of 3'-O-Mesylthymidine. Formation of 1-(3-Azido-2,3-dideoxy-β-D-threo-pentofuranosyl)thymine and Its Conversion into 6,3'-Imino-1-(2,3-dideoxy-β-D-threo-pentofuranosyl)thymine

Matsuda, Akira,Watanabe, Kyoichi A.,Fox, Jack J.

, p. 3274 - 3278 (1980)

Treatment of 5'-O-trityl-3'-O-mesylthymidine (3) with NaN3 in DMF at reflux gave 5'-O-trityl-3'-azido-3'-deoxythymidine (5) and 6,3'-imino-1-(5-O-trityl-3-deoxy-β-D-threo-pentofuranosyl)thymine (8).Compound 8 was formed from the 3'-azido-threo-pentofuranosylthymine derivative 6.A mechanism is proposed for the formation of 8 from 6.Also, the 6,5'-imino-bridged thymidine 18 was prepared.Conformational features of these imino-bridged nucleosides are discussed.

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