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170638-52-5

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170638-52-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170638-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,6,3 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 170638-52:
(8*1)+(7*7)+(6*0)+(5*6)+(4*3)+(3*8)+(2*5)+(1*2)=135
135 % 10 = 5
So 170638-52-5 is a valid CAS Registry Number.

170638-52-5Downstream Products

170638-52-5Relevant articles and documents

Efficient Method for the Preparation of Nucleoside Phosphorofluoridates and Nucleoside Phosphorofluoridothioates

Bollmark, Martin,Zain, Rula,Stawinski, Jacek

, p. S68 - S71 (2007/10/03)

Dinucleoside H-phosphonates and nucleoside H-phosphonothioates can be efficiently transformed to the fluorophosphate and fluorothiophosphate diester derivatives via iodine promoted oxidation in the presence of fluoride anions.An analogous oxidation of the

Conversion of nucleoside H-phosphonate monoesters to the corresponding H- phosphonothioates. 31P NMR studies

Stawinski,Zain

, p. 711 - 714 (2007/10/02)

31P NMR Studies on the conversion of nucleoside H-phosphonate monoesters into the corresponding H-phosphonothioates revealed that the key intermediate, the nucleoside trimethylsilyl pivaloyl phosphite 3, may undergo under the reaction condition

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