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157365-67-8

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157365-67-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157365-67-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,3,6 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 157365-67:
(8*1)+(7*5)+(6*7)+(5*3)+(4*6)+(3*5)+(2*6)+(1*7)=158
158 % 10 = 8
So 157365-67-8 is a valid CAS Registry Number.

157365-67-8Downstream Products

157365-67-8Relevant articles and documents

Synthesis and Evaluation of Antiviral Activity of 2'-Deoxyuridines with 5-Methylene-2-thiohydantoin Substituents in the 5-Position

El-Barbary, A. A.,Khodair, A. I.,Pedersen, E. B.,Nielsen, C.

, p. 593 - 598 (1994)

1-(2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl)-5-formyluracil (4) was synthesized from 5-formyluracil and an appropriate methyl glycoside and condensed with 2-thiohydantoin (5a) and its corresponding 3-phenyl derivative 5b to give 5--2-thiohydantoins 7a and 7b, respectively, in 65-70percent yield.They were deprotected with sodium methoxide in methanol to give both anomers of the free nucleosides.In a different route 5-formyluracil (1) was condensed with 5b and subsequently with an appropriate methyl glycoside to give 7b. - Keywords: 2'-Deoxyuridines; 2-Thiohydantoins; Nucleoside synthesis; Antiviral activity.

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