82043-99-0 Usage
Compound type
Cyclic organic compound
Family
Pyrazinone
Appearance
White to light yellow crystalline powder with a faint odor
Uses
Synthesis of pharmaceuticals and agricultural chemicals
Versatility
Reactive and has functional groups for various applications
Potential applications
Medicinal chemistry (building block for bioactive molecules), intermediate in specialty chemicals and advanced materials production
Check Digit Verification of cas no
The CAS Registry Mumber 82043-99-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,0,4 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 82043-99:
(7*8)+(6*2)+(5*0)+(4*4)+(3*3)+(2*9)+(1*9)=120
120 % 10 = 0
So 82043-99-0 is a valid CAS Registry Number.
82043-99-0Relevant articles and documents
A Photochemical Ring Contraction of an Imino Lactam
Kleyer, Don L.,Koch, Tad H.
, p. 3145 - 3148 (2007/10/02)
The photochemical rearrangement of three tetrahydro-2-pyrazinones in aqueous medium to imidazol-5-ones is described. 1,2,5,6-Tetrahydro-3,5,5-trimethyl-2-pyrazinone (4) gives 1,2,2,4-tetramethyl-3-imidazolin-5-one (7), 1,2,5,6-tetrahydro-3,6,6-trimethyl-2-pyrazinone (5) gives 4-methyl-5-imidazolidinone (9), and 1,2,5,6-tetrahydro-1,3,5,5-tetramethyl-2-pyrazinone (6) gives 1,4-dimethyl-5-imidazolidinone (8).A mechanism involving enediimine and isoimidazole intermediates is proposed in analogy with the mechanism for rearrangement of 5,6-dihydropyrazines to imidazoles.
