3,5-Dibromo-2-hydroxypyrazine

Modify Date: 2024-01-11 19:23:02

3,5-Dibromo-2-hydroxypyrazine Structure
3,5-Dibromo-2-hydroxypyrazine structure
Common Name 3,5-Dibromo-2-hydroxypyrazine
CAS Number 21943-15-7 Molecular Weight 253.880
Density 2.4±0.1 g/cm3 Boiling Point 430.5±40.0 °C at 760 mmHg
Molecular Formula C4H2Br2N2O Melting Point N/A
MSDS Chinese USA Flash Point 214.2±27.3 °C
Symbol GHS05 GHS07
GHS05, GHS07
Signal Word Danger

 Names

Name 3,5-dibromo-1H-pyrazin-2-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 2.4±0.1 g/cm3
Boiling Point 430.5±40.0 °C at 760 mmHg
Molecular Formula C4H2Br2N2O
Molecular Weight 253.880
Flash Point 214.2±27.3 °C
Exact Mass 251.853378
PSA 46.01000
LogP 1.52
Vapour Pressure 0.0±1.1 mmHg at 25°C
Index of Refraction 1.667

 Safety Information

Symbol GHS05 GHS07
GHS05, GHS07
Signal Word Danger
Hazard Statements H302-H318
Precautionary Statements P280-P305 + P351 + P338
Hazard Codes Xn
Risk Phrases 22-41
Safety Phrases 26-39
RIDADR NONH for all modes of transport
HS Code 2933990090

 Synthetic Route

~79%

3,5-Dibromo-2-hydroxypyrazine Structure

3,5-Dibromo-2-h...

CAS#:21943-15-7

Literature: PFIZER INC.; NINKOVIC, Sacha; BRAGANZA, John Frederick; COLLINS, Michael Raymond; KATH, John Charles; LI, Hui; RICHTER, Daniel Tyler Patent: WO2010/16005 A1, 2010 ; Location in patent: Page/Page column 144 ; WO 2010/016005 A1

 Precursor & DownStream

Precursor  1

DownStream  1

 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%

 Synonyms

3,5-Dibrom-2(1H)-pyrazinon
2-pyrazinol, 3,5-dibromo-
3,5-Dibromo-2-pyrazinol
3,5-Dibromo-2(1H)-pyrazinone
3,5-Dibromo-2-hydroxypyrazine
3,5-Dibromo-pyrazin-2-ol
3,5-Dibrom-2-hydroxy-pyrazin
3,5-dibromopyrazin-2-ol
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