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127560-98-9

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127560-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127560-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,5,6 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 127560-98:
(8*1)+(7*2)+(6*7)+(5*5)+(4*6)+(3*0)+(2*9)+(1*8)=139
139 % 10 = 9
So 127560-98-9 is a valid CAS Registry Number.

127560-98-9Downstream Products

127560-98-9Relevant articles and documents

OXIDATION OF 4-, 6- AND 7-HYDROXYINDOLES.

Napolitano, Alessandra,d'Ischia, Marco,Prota, Giuseppe,Schultz, Thomas M.,Wolfram, Leszek J.

, p. 6749 - 6760 (1989)

Oxidation of 4-, 6- and 7-hydroxyindoles with sodium periodate in phosphate buffer at pH 7.0 leads to complex mixtures of oligomeric products, the majority of which have been isolated and characterised as the O-acetyl derivatives. 7-Hydroxyindole (6) gives predominantly the dimers 9 and 10 as well as the trimer 11 and the tetramer 12 in smaller amounts.The 4- and 6-hydroxy isomers 7 and 8 follow less clear-cut reaction paths, characterised by the formation of the oligomers 13-16 and 17-19 respectively, along with polymeric materials.The observed mode of polymerisation of hydroxyindoles 6-8 is apparently consistent with a mechanism involving nucleophilic addition of the starting indoles to the electrophilic positions of transient quinonimine or phenoxonium-like intermediates.

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