129109-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129109-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,1,0 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 129109-19:
(8*1)+(7*2)+(6*9)+(5*1)+(4*0)+(3*9)+(2*1)+(1*9)=119
119 % 10 = 9
So 129109-19-9 is a valid CAS Registry Number.
InChI:InChI=1/C12H8Cl2N2O3/c1-19-12(18)11-9(14)6-10(17)16(15-11)8-4-2-7(13)3-5-8/h2-6H,1H3
129109-19-9Relevant articles and documents
Pyridazines with Heteroatom Substituents in Position 3 and 5. 6. SN Reactions in Position 5 of 2-Aryl-5-hydroxypyridazin-3(2H)-ones
Schober, Berndt D.,Megyeri, Gabor,Kappe, Thomas
, p. 471 - 477 (2007/10/02)
The nucleophilic introduction of chloro- (2), azido- (4), (substituted) amino (3,6), mercapto (10) and hydrazino-groups (13) into 2-aryl-5-hydroxypyridazin-3(2H)-ones is described.The 5-aminopyridazin-3(2H)-one (6) also reacts with activated malonates 8 t