Safety Reference
Danger
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
H319
Sourcing 4-Hydroxy-3-pyridinesulfonic acid?
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Sourcing 4-Hydroxy-3-pyridinesulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
4-Hydroxy-3-pyridinesulfonic acid is a pharmaceutical intermediate primarily used in the synthesis of active pharmaceutical ingredients (APIs). It features a pyridine ring with hydroxy and sulfonic acid substituents, contributing to its utility in organic synthesis.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
The international HS code for 4-Hydroxy-3-pyridinesulfonic acid (CAS 51498-37-4) is 2933.39.
2933.39
2933 39 99
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-oxo-1H-pyridine-3-sulfonic acid
AZRCSTMIVMQIPR-UHFFFAOYSA-N
C1=CNC=C(C1=O)S(=O)(=O)O