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1055900-91-8

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1055900-91-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1055900-91-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,5,9,0 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1055900-91:
(9*1)+(8*0)+(7*5)+(6*5)+(5*9)+(4*0)+(3*0)+(2*9)+(1*1)=138
138 % 10 = 8
So 1055900-91-8 is a valid CAS Registry Number.

1055900-91-8Downstream Products

1055900-91-8Relevant articles and documents

Room-temperature electrophilic 5-endo-dig chlorocyclization of alk-3-yn-1-ones with the use of pool sanitizer: Synthesis of 3-chlorofurans and 5-chlorofuropyrimidine nucleosides

Sniady, Adam,Morreale, Marco S.,Wheeler, Kraig A.,Dembinski, Roman

scheme or table, p. 3449 - 3452 (2009/04/10)

The 5-endo-dig chlorocyclization of 1,4-disubstituted alk-3-yn-1-ones (propargylic ketones) with the use of trichloro-striazinetrione (trichloroisocyanuric acid, TCCA; 0.4 equiv.) in toluene, at room temperature, in the absence of base, provides 2,5-disubstituted 3-chlorofurans in high yields (79-96%). The reaction can be accomplished by using commercially available swimming pool sanitizer. Selected 3-chlorofuran was validated as a substrate for Suzuki-Miyaura coupling. In a similar manner, chlorocyclization of 5-alkynyl-2′-deoxyuridines produces 5-chlorofuropyrimidine nucleosides (76-83%), which are analogues of potent anitviral agents. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

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