41932-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 41932-99-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,9,3 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 41932-99:
(7*4)+(6*1)+(5*9)+(4*3)+(3*2)+(2*9)+(1*9)=124
124 % 10 = 4
So 41932-99-4 is a valid CAS Registry Number.
InChI:InChI=1/C11H11ClN4O/c1-15(13)9-7-14-16(11(17)10(9)12)8-5-3-2-4-6-8/h2-7H,13H2,1H3
41932-99-4Relevant articles and documents
Synthesis of Pyrazolopyridazines from 5-(1-Methylhydrazino)-pyridazines by Means of the Vilsmeier-Haack Reaction
Kaji, Kenji,Nagashima, Hiromu,Hirose, Yoshihiko,Oda, Hirohisa
, p. 982 - 988 (2007/10/02)
Reaction of 2-substituted 5-(1-methylhydrazino)-3(2H)-pyridazinones (2a-d) with dimethylformamide-phosphorus oxychloride afforded 5-substituted 1,5-dihydro-1-methyl-4H-pyrazolopyridazin-4-ones (3a-d) in good yields.However, concurrent formation of