83431-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83431-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,4,3 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 83431-05:
(7*8)+(6*3)+(5*4)+(4*3)+(3*1)+(2*0)+(1*5)=114
114 % 10 = 4
So 83431-05-4 is a valid CAS Registry Number.
InChI:InChI=1/C7H6N2O/c1-5-9-6-2-3-8-4-7(6)10-5/h2-4H,1H3
83431-05-4Relevant articles and documents
Photochemical rearrangements of 3-methyliscxazolopyridines
Donati, Donato,Fusi, Stefania,Ponticelli, Fabio,Tedeschi, Piero
, p. 1899 - 1905 (2007/10/02)
Irradiation in water-saturated ethyl ether of isoxazolopyridines 1a,e, beside the corresponding oxazolopyridines 2a,e, leads to N-methylcarboxamides 3a,e via 1-2 shift of the methyl group. The isoxazolopyridine 5, bearing a hydrazino group in 4-position, rearranges only to l-aminopyrazolopyridine 6.