18213-76-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18213-76-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,2,1 and 3 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 18213-76:
(7*1)+(6*8)+(5*2)+(4*1)+(3*3)+(2*7)+(1*6)=98
98 % 10 = 8
So 18213-76-8 is a valid CAS Registry Number.
InChI:InChI=1/C5H5N5O/c1-10-4-3(2-6-10)5(11)8-9-7-4/h2,6H,1H3
18213-76-8Relevant articles and documents
NOVEL 4,5-DIHYDROPYRAZOLOPYRIMIDIN-4-ONES AND 3,4-DIHYDROPYRAZOLO-1,2,3-TRIAZIN-4-ONES
Maquestiau, A.,Banneux, F.,Eynde, J.-J. Vanden
, p. 401 - 406 (2007/10/02)
β-benzylidene 3- and 5-amino-1-methyl-1H-pyrazole-4-carboxhydrazides 3 and 4 readily react with orthoesters to yield the 4,5-dihydropyrazolopyrimidin-4-ones 5-8.Syntheses of 3,4-dihydropyrazolo-1,2,3-triazin-4-ones 9, 10, 13 and 14 were achi