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2,3-Diaminopyrazine
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Name

2,3-Diaminopyrazine

 EINECS N/A
CAS No. 13134-31-1 Density 1.368 g/cm3
PSA 77.82000 LogP 0.80340
Solubility N/A Melting Point 205.6 °C
Formula C4H6N4 Boiling Point 351.6 °C at 760 mmHg
Molecular Weight 110.118 Flash Point 193.5 °C
Transport Information N/A Appearance N/A
Safety Risk Codes N/A
Molecular Structure Molecular Structure of 13134-31-1 (2,3-PYRAZINEDIAMINE) Hazard Symbols N/A
Synonyms

Pyrazine,2,3-diamino- (7CI,8CI);2,3-Pyrazinediamine;NSC 139902;

Article Data 9

2,3-Diaminopyrazine Synthetic route

156331-25-8

2-amino-3-azidopyrazine

13134-31-1

pyrazine-2,3-diamine

Conditions
ConditionsYield
With hydrogenchloride; tin(ll) chloride In methanol at 60℃; for 2h;87%
With hydrogenchloride; tin(ll) chloride In methanol at 60℃;70%
51097-07-5

[1,2,5]thiadiazolo[3,4-b]pyrazine

13134-31-1

pyrazine-2,3-diamine

Conditions
ConditionsYield
With hydrogenchloride; tin(ll) chloride for 1h; Ambient temperature;83%
6863-73-6

3-chloropyrazin-2-amine

13134-31-1

pyrazine-2,3-diamine

Conditions
ConditionsYield
With ammonia In water at 130℃; Sealed tube;11%
With ammonia; water; copper
21943-12-4

3-bromo-pyrazine-2-amine

13134-31-1

pyrazine-2,3-diamine

Conditions
ConditionsYield
With ammonia; copper In ethanol at 140℃; for 20h;2.05 g
89123-58-0

2,3-diamino-5-bromopyrazine

13134-31-1

pyrazine-2,3-diamine

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen In ethanol under 2068.65 Torr; for 8h;
13134-31-1

pyrazine-2,3-diamine

64817-81-8

2,3-dihydroxyanthracene

1356380-51-2

5,14-dihydro-1,4,5,14-tetraazapentacene

Conditions
ConditionsYield
at 205 - 215℃; for 3h; Inert atmosphere;98%
13134-31-1

pyrazine-2,3-diamine

530-62-1

1,1'-carbonyldiimidazole

16328-63-5

1H-imidazo<4,5-b>pyrazin-2(3H)-one

Conditions
ConditionsYield
In tetrahydrofuran at 80℃; for 4h; Inert atmosphere;92%
13134-31-1

pyrazine-2,3-diamine

12354-84-6, 12354-85-7

bis[dichloro(pentamethylcyclopentadienyl)iridium(III)]

6487-48-5

potassium oxalate monohydrate

C34H49Cl4Ir3N4

Conditions
ConditionsYield
In methanol at 20℃; for 3h;85%
13134-31-1

pyrazine-2,3-diamine

C22H15NO2

C26H17N5

Conditions
ConditionsYield
With acetic acid Reflux;82%
13134-31-1

pyrazine-2,3-diamine

57-13-6

urea

16328-63-5

1H-Imidazo<4,5-b>pyrazin-2-ol

Conditions
ConditionsYield
In diphenylether at 240℃; for 5h;57%

2,3-Diaminopyrazine Chemical Properties

Molecule structure of 2,3-Pyrazinediamine (CAS NO.13134-31-1):

IUPAC Name: Pyrazine-2,3-diamine 
Molecular Weight: 110.11724 g/mol
Molecular Formula: C4H6N4
Density: 1.368 g/cm3 
Boiling Point: 351.6 °C at 760 mmHg 
Flash Point: 193.5 °C
Index of Refraction: 1.694
Molar Refractivity: 30.9 cm3
Molar Volume: 80.4 cm3
Polarizability: 12.25×10-24 cm3
Surface Tension: 89.2 dyne/cm 
Enthalpy of Vaporization: 59.64 kJ/mol
Vapour Pressure: 4.05E-05 mmHg at 25 °C
XLogP3-AA: -0.9
H-Bond Donor: 2
H-Bond Acceptor: 4
Tautomer Count: 3
Exact Mass: 110.059246
MonoIsotopic Mass: 110.059246
Topological Polar Surface Area: 77.8
Heavy Atom Count: 8
Complexity: 64.4
Canonical SMILES: C1=CN=C(C(=N1)N)N
InChI: InChI=1S/C4H6N4/c5-3-4(6)8-2-1-7-3/h1-2H,(H2,5,7)(H2,6,8)
InChIKey: CAFSXVAFGILCCI-UHFFFAOYSA-N
Product Categories of 2,3-Pyrazinediamine (CAS NO.13134-31-1): Piperazine series

2,3-Diaminopyrazine Specification

 2,3-Pyrazinediamine (CAS NO.13134-31-1) is also named as 2,3-Pyrazindiamin ; Pyrazine-2,3-diamine .

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