Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4-oxo-4-[[4-[(2-pyridylamino)sulphonyl]phenyl]amino]isocrotonic acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

40265-99-4

40265-99-4 structure

40265-99-4 structure

Name: 4-oxo-4-[[4-[(2-pyridylamino)sulphonyl]phenyl]amino]isocrotonic acid
Chemical Name: 4-oxo-4-[4-(pyridin-2-ylsulfamoyl)anilino]but-2-enoic acid
CAS Number: 40265-99-4
Molecular Formula: C₁₅H₁₃N₃O₅S
Molecular Weight: 347.34600
Create Date: 2017-08-22 09:35:07
Modify Date: 2025-09-17 17:57:35

Name	4-oxo-4-[4-(pyridin-2-ylsulfamoyl)anilino]but-2-enoic acid
Synonyms	N-(4-[2]Pyridylsulfamoyl-phenyl)-maleamidsaeure 4-oxo-4-({4-[(2-pyridylamino)sulphonyl]phenyl}amino)isocrotonic acid N-(4-[2]pyridylsulfamoyl-phenyl)-maleamic acid 4-OXO-4-[[4-[(PYRIDIN-2-YLAMINO)SULFONYL]PHENYL]AMINO]ISOCROTONIC ACID

Density	1.536g/cm3
Molecular Formula	C₁₅H₁₃N₃O₅S
Molecular Weight	347.34600
Exact Mass	347.05800
PSA	133.84000
LogP	2.68850
Index of Refraction	1.681

HS Code	2935009090

108-31-6 structure

108-31-6

144-83-2 structure

144-83-2

~%

40265-99-4 structure

40265-99-4

Literature: Shapiro; Bergmann Journal of Organic Chemistry, 1941 , vol. 6, p. 774,778

Precursor 2
108-31-6 144-83-2
DownStream 0

HS Code	2935009090
Summary	2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

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