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4-Hydroxypyridine-3-Sulfonic Acid

4-Hydroxypyridine-3-Sulfonic Acid / CAS : 51498-37-4

Appearance White crystalline powder UN 3261
HS 2933399099 DG Class 8
Synonyms 4-Hydroxy-3-Pyridinesulfonic acid; 4-Hydroxypyridine-3-Sulphonic acid; 4-oxo-1H-Pyridine-3-Sulfonic acid; 4-Hydroxy-3-Pyridinesulphonic acid; 3-Pyridinesulfonic acid, 4-Hydroxy-; Hydroxypyridinesulfonicacid; 4-Hydroxypyridie-3-Sulphonic acid; 4-Pyridinol-3-Sulfonic Acid; 4-Oxo-1,4-Dihydro-3-Pyridinesulfonic acid
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Properties

Summary

Formula
C5H5NO4S
Molecular Mass
175.16200
Exact Mass
174.99400
PSA
95.87000
Logp
1.11470
IUPAC
4-oxo-1H-pyridine-3-sulfonic acid
SMILES
C1=CNC=C(C1=O)S(=O)(=O)O

Attribute classification

Matter Classification
organic
Category
API & Intermediate > Pharmaceutical Intermediates

Chemical and Physical Properties

Melting Point
>300°C
Density
1.71 g/cm3
Appearance
White crystalline powder

Export information

HS Code
2933399099
Export Rebate
13%
UN No.
3261
DG-Class
8
Risk Code
R34;R36/37/38
Safety Label
C

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