Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4,5-Dibromo-3(2H)pyridazinone
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
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5788-58-9

5788-58-9 structure

5788-58-9 structure

Name: 4,5-Dibromopyridazin-3-one
Chemical Name: 4,5-Dibromopyridazin-3-One
CAS Number: 5788-58-9
Molecular Formula: C₄H₂Br₂N₂O
Molecular Weight: 253.880
Catalog: Pharmaceutical intermediate Heterocyclic compound Pyridazine
Create Date: 2018-10-22 19:52:40
Modify Date: 2026-07-10 12:30:24

Name	4,5-Dibromopyridazin-3-One
Synonyms	4,5-Dibromo-3(2H)-pyridazinon 4,5-DIBROMOPYRIDAZIN-3-ONE 4,5-DIBROMO-3(2H)-PYRIDAZINONE 4,5-Dibromo-3(2H)-pyridazinone 4,5-Dibromo-3[2H]-pyridazone 4,5-dibromopyridazine-3(2H)-one 4,5-Dibromoyridazin-3-one 4,5-Dibromopyridazin-32Hü-one 4,5-DIBROMOPYRIDAZIN-3[2H]-ONE 4,5-DIBROMO-2-METHYLPYRIDA 4,5-dibromopyridazin-3(2H)-one 4,5-Dibromopyridazin-3-one ISO 9001：2015 REACH 4,5-DIBROMO-2-METHYLPYRIDAZINE-3-ONE N'-(5-bromo-2-oxo-3-indolyl)-1-naphthalenesulfonohydrazide 3(2H)-Pyridazinone, 4,5-dibromo 4,5-dibromo-1H-pyridazin-6-one 4,5-DIBROMO-2H-PYRIDAZIN-3-ONE 4,5-Dibromo-2,3-dihydropyridazin-3-one 4,5-Dibromo-3-pyridazone 4,5-dibromopyridazin-3-ol 4,5-Dibromo-3-hydroxypyridazine MFCD00023641 4,5-Dibromo-2-methylpyridazine-3(2H)-one

Density	2.5±0.1 g/cm3
Boiling Point	365.6ºC at 760mmHg
Melting Point	231-233°C
Molecular Formula	C₄H₂Br₂N₂O
Molecular Weight	253.880
Exact Mass	251.853378
PSA	45.75000
LogP	0.23
Index of Refraction	1.744

Hazard Codes	Xi
Risk Phrases	R36/37/38
Safety Phrases	S26-S36
HS Code	2933990090

21577-50-4 structure

21577-50-4

~90%

5788-58-9 structure

5788-58-9

Literature: Humphries, Paul S.; Oliver, Robert M. Tetrahedron Letters, 2009 , vol. 50, # 22 p. 2682 - 2684

38164-25-9 structure

38164-25-9

~%

5788-58-9 structure

5788-58-9

Literature: Synlett, , # 8 p. 1113 - 1116

Precursor 2
21577-50-4 38164-25-9
DownStream 4
504-30-3 134965-39-2 13645-74-4 38164-25-9

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%

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