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129468-49-1

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129468-49-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129468-49-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,4,6 and 8 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 129468-49:
(8*1)+(7*2)+(6*9)+(5*4)+(4*6)+(3*8)+(2*4)+(1*9)=161
161 % 10 = 1
So 129468-49-1 is a valid CAS Registry Number.

129468-49-1Relevant articles and documents

Synthesis of hydantoin analogues of 3'-fluoro-3'-deoxythymidine (FLT)

Abdel-Bary, Hamed M.,El-Barbary, Ahmed A.,Khodair, Ahmed I.,Megied, Ahmed Es Abdel,Pedersen, Erik B.,Nielsen, Claus

, p. 149 - 155 (2007/10/02)

Reaction of methyl 2-deoxy-5-O-(4-phenylbenzoyl)-β-D-erythro-pentofuranoside 2 with diethylaminosulfur trifluoride (DAST) in a 1:10 molar ratio in CH2Cl2 at room temperature for 5 d afforded methyl 2,3-dideoxy-3-fluoro-5-O-(4-phenylbenzoyl)-β-D-erythro-pentafuranoside 4 in 57percent yield, while the α-anomer 3 under the same reaction conditions yielded the 3-fluoro-α-D-erythro derivative 10 in 14percent yield together with the 5-fluoro-D-α--threo derivative 11 in 22percent yield. (Z)-5-Benzylidene-, (E)-ethylidene- and 5,5-dimethylhydantoin nucleosides were obtained by condensation of the appropriate silylated nucleobases with 4.The protected nucleosides were in all cases deblocked by treatment with sodium methoxide in methanol.The (Z)-ethylidene group isomerized to the E configuration during the nucleoside synthesis. - Key words: hydantoin / 3'-fluoro-3'-deoxythymidine / methyl 2,3-dideoxy-3-fluoro-β-D-erythro-pentofuranoside

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