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123884-02-6

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123884-02-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123884-02-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,8,8 and 4 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123884-02:
(8*1)+(7*2)+(6*3)+(5*8)+(4*8)+(3*4)+(2*0)+(1*2)=126
126 % 10 = 6
So 123884-02-6 is a valid CAS Registry Number.

123884-02-6Relevant articles and documents

Facile Synthesis of 3'-O-Methylthymidine and 3'-Deoxythymidine and Related Deoxygenated Thymidine Derivative: A New Method for Selective Deoxygenation of Secondary Hydroxy Groups

Sekine, Mitsuo,Nakanishi, Takeshi

, p. 924 - 928 (2007/10/02)

This paper deals with convenient synthesis of 3'-O-methylthymidine (2) and 3'-deoxythymidine (3), which involve Ag2O-promoted methylation and Barton-Robins reductive deoxygenation, respectively.New methods for the regioselective 3'- and 5'-deoxygenation of thymidine have also been developed.Namely, compound 3 was synthesized by the 3',5'-O-diacylation of thymidine with phenyl chlorothionoformate (PTCF) followed by the selective 3'-reduction with tributyltin hydride and successive alkaline hydrolysis. 5'-Deoxythymidine (18) was obtained by the 5'-selective acylation of thymidine with PTCF followed by reduction with tributyltin hydride.

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