Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4,4-dibromo-5-methyl-2H-pyrazol-3-one
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4,4-dibromo-5-methyl-2H-pyrazol-3-one
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

33549-66-5

33549-66-5 structure

33549-66-5 structure

Name: 4,4-dibromo-5-methyl-2H-pyrazol-3-one
Chemical Name: 4,4-dibromo-3-methyl-1H-pyrazol-5-one
CAS Number: 33549-66-5
Molecular Formula: C₄H₄Br₂N₂O
Molecular Weight: 255.89500
Create Date: 2018-12-22 17:09:23
Modify Date: 2025-08-25 20:04:07

Name	4,4-dibromo-3-methyl-1H-pyrazol-5-one
Synonyms	4,4-dibromo-5-methyl-2,4-dihydro-3H-pyrazol-3-one 4,4-dibromo-3-methylpyrazol-5-one 4,4-dibromo-3-methyl-1H-pyrazolin-5-one 3-methyl-4,4-dibromo-2-pyrazolin-5-one 4,4-dibromo-3-methyl-1,4-dihydro-pyrazol-5-one 4,4-Dibromo-3-methyl-2-pyrazolin-5-on 4,4-DIBROMO-3-METHYL-2-PYRAZOLIN-5-ONE 4,4-Dibromo-3-methyl-2-pyrazolin-5-one

Density	2.44g/cm3
Melting Point	129-132ºC
Molecular Formula	C₄H₄Br₂N₂O
Molecular Weight	255.89500
Exact Mass	253.86900
PSA	41.46000
LogP	0.74260
Index of Refraction	1.71

HS Code	2933199090

Precursor 3
108-26-9 4344-87-0 3206-39-1
DownStream 8
590-93-2 79746-51-3 74235-59-9 68654-22-8
68654-23-9 74235-58-8 436085-95-9 52605-79-5

HS Code	2933199090
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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