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137091-53-3

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137091-53-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137091-53-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,9 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137091-53:
(8*1)+(7*3)+(6*7)+(5*0)+(4*9)+(3*1)+(2*5)+(1*3)=123
123 % 10 = 3
So 137091-53-3 is a valid CAS Registry Number.

137091-53-3Relevant articles and documents

Nucleic Acid Related Compounds. 70. Synthesis of 2'(and 3')-Deoxy-2'(and 3')-methyleneadenosines and Bis(methylene)furan 4',5'-Didehydro-5'-deoxy-2'(and 3')-methyleneadenosines. Inhibitors of S-Adenosyl-L-homocysteine Hydrolase and Ribonucleotide Reductase

Samano, Vicente,Robins, Morris J.

, p. 7108 - 7113 (2007/10/02)

Wittig treatment of 3',5'(or 2',5')-bis-O-silyl-2'(or 3')-ketoadenosine derivatives with methylenetriphenylphosphorane and deprotection gave the 2'(or 3')-deoxy-2'(or 3')-methyleneadenosines, respectively.Enzymatic deamination afforded the 2'(or 3')-deoxy-2'(or 3')-methyleneinosines.Treatment of 2'-O-(tert-butyldimethylsilyl)-3'-deoxy-3'-methylene-5'-O-tosyladenosine (14) with sodium 2-methyl-2-butoxide and deprotection gave 9-(3,5-dideoxy-3-methylene-β-D-glycero-pent-4-enofuranosyl)adenine (20).Analogous treatment of a protected 2',5'-dideoxy-5'-iodo-2'-methyleneadenosine derivative gave 9-(2,5-dideoxy-2-methylene-β-D-glycero-pent-4-enofuranosyl)adenine (22).Biochemical aspects of the putative mechanism-based inhibition of S-adenosyl-L-homocysteine hydrolase and ribonucleotide reductase by these compounds are discussed.

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