Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
Price: Check
Purity: 97.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
Price: ￥3746.0/25g ￥1066.0/5g ￥326.0/1g
Purity: 95.0%
Stocking Period: 1 Day
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-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

277299-70-4

277299-70-4 structure

277299-70-4 structure

Name: 2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one
Chemical Name: 2-(3,4-dimethylphenyl)-5-methyl-1H-pyrazol-3-one
CAS Number: 277299-70-4
Molecular Formula: C₁₂H₁₄N₂O
Molecular Weight: 202.252
Catalog: Pharmaceutical intermediate API intermediate
Create Date: 2018-12-28 13:20:16
Modify Date: 2025-09-14 09:11:15

Name	2-(3,4-dimethylphenyl)-5-methyl-1H-pyrazol-3-one
Synonyms	Eltrombopag II 2-(3,4-Dimethylphenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one 2-(3,4-dimethylphenyl)-5-methyl-1H-pyrazol-3(2H)-one 2-(3,4-Dimethylphenyl)-1,2-dihydro-5-methyl-3H-pyrazol-3-one 1-(3,4-dimethylphenyl)-3-methyl-3-pyrazolin-5-one 3-methyl-1-(3,4-dimethylphenyl)-2-pyrazolin-5-one 2-(3,4-dimethylphenyl)-5-methyl-4H-pyrazol-3-one 3H-Pyrazol-3-one, 2-(3,4-dimethylphenyl)-1,2-dihydro-5-methyl- 3H-Pyrazol-3-one, 2-(3,4-dimethylphenyl)-2,4-dihydro-5-methyl- Eltrombopag olamine Intermediate 4

Density	1.1±0.1 g/cm3
Boiling Point	338.5±52.0 °C at 760 mmHg
Melting Point	121.0 to 125.0 °C
Molecular Formula	C₁₂H₁₄N₂O
Molecular Weight	202.252
Flash Point	158.5±30.7 °C
Exact Mass	202.110611
PSA	37.79000
LogP	2.64
Vapour Pressure	0.0±0.7 mmHg at 25°C
Index of Refraction	1.571

HS Code	2933199090

141-97-9 structure

141-97-9

60481-51-8 structure

60481-51-8

~78%

277299-70-4 structure

277299-70-4

Literature: US2004/53299 A1, ;

141-97-9 structure

141-97-9

13636-53-8 structure

13636-53-8

~63%

277299-70-4 structure

277299-70-4

Literature: US6552008 B1, ;

Precursor 3
141-97-9 60481-51-8 13636-53-8
DownStream 0

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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