Pyrido[2,3-b]pyrazine

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Names

[ CAS No. ]:
322-46-3

[ Name ]:
Pyrido[2,3-b]pyrazine

[Synonym ]:
1,4,5-Triazanaphthalene
MFCD00053172
2,3-pyridopyrazine
Pyrido(2,3-b)pyrazine
1,4,5-trazanaphthalene
1,4,5-Triazanaphthalin
Pyrido(3,2-b)pyrazine
EINECS 206-294-9
5-azaquinoxaline

Chemical & Physical Properties

[ Density]:
1.27 g/cm3

[ Boiling Point ]:
253.9ºC at 760 mmHg

[ Melting Point ]:
139-143 °C

[ Molecular Formula ]:
C7H5N3

[ Molecular Weight ]:
131.13500

[ Flash Point ]:
115.9ºC

[ Exact Mass ]:
131.04800

[ PSA ]:
38.67000

[ LogP ]:
1.02480

[ Index of Refraction ]:
1.665

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UV1151600
CHEMICAL NAME :
Pyrido(2,3-b)pyrazine
CAS REGISTRY NUMBER :
322-46-3
BEILSTEIN REFERENCE NO. :
0111634
LAST UPDATED :
199709
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C7-H5-N3
MOLECULAR WEIGHT :
131.15
WISWESSER LINE NOTATION :
T66 BN EN JNJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
180 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#03516

Safety Information

[ Hazard Codes ]:
Xn:Harmful;

[ Risk Phrases ]:
R20/21/22;R36/37/38

[ Safety Phrases ]:
S36/37/39-S26

[ RTECS ]:
UV1151600

[ HS Code ]:
2933990090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • 1,4-Dioxane-2,3-diol
  • 2,3-Diaminopyridine
  • 2,3-Dichloro-pyrido[2,3-b]pyrazine
  • GLYOXAL SODIUM BISULFITE
  • 7-Bromopyrido[2,3-b]pyrazine

DownStream

  • 1,2,3,4-tetrahydropyrido[2,3-b]pyrazine

Customs

[ HS Code ]: 2933990090

[ Summary ]:
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Related Compounds

  • 7-Iodopyrido[2,3-b]pyrazine
  • 6-Iodo-pyrido[2,3-b]pyrazine
  • 6-Bromopyrido[2,3-b]pyrazine
  • 7-Bromopyrido[2,3-b]pyrazine
  • 2-Chloropyrido[2,3-b]pyrazine
  • 7-methylpyrido[2,3-b]pyrazine
  • 5-[3-(Thiomorpholine-4-carbonyl)pyrrolidin-1-yl]pyridine-2-carbonitrile
  • tert-butyl N-(5-hydroxy-2,2-dimethylhexan-3-yl)carbamate
  • N-{[1-(3-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}acetamide
  • 1-(5-bromopyridin-2-yl)-N-cyclopropylpiperidine-3-carboxamide
  • 1-(4-Bromophenyl)-4-[(5-methyl-1,2,4-oxadiazol-3-yl)methyl]piperazine
  • 2-[4-(but-2-yn-1-yl)piperazin-1-yl]-N,N-dimethylpyrimidin-4-amine
  • 1-(5-bromo-3-fluoropyridin-2-yl)-N-cyclopropylpiperidine-3-carboxamide
  • Tert-butyl 4-(1-amino-3-hydroxy-2-methylpropan-2-yl)piperidine-1-carboxylate
  • ethyl 5-(1-aminopropyl)-1H-1,2,3-triazole-4-carboxylate
  • 1-(3-Methyl-1-benzofuran-2-yl)-3-oxocyclobutane-1-carbonitrile
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