4-Hydroxy-3-nitrobenzaldehyde: name and identification

2 min

4-Hydroxy-3-nitrobenzaldehyde: an explanation of the name and catalogue data, with guidance on distinguishing variants and checking documentation.

How to read the name

“4-Hydroxy-3-nitrobenzaldehyde” is recorded in the OCA catalogue under number 3011-34-5. Preserving the full name is important because the catalogue contains many similarly named aromatic derivatives. The initial notation 4 specifies the positions of the substituents named afterwards. Removing these numbers loses information about compound structure.

Reference record

A distinction that matters

Hydroxy indicates a hydroxyl group. Retain its position alongside those of the other substituents. Nitro and amino are different functional groups. Similar names do not justify merging such listings into one substance. This interprets nomenclature; it does not predict a particular sample’s melting point, solubility or reactivity.

What the catalogue establishes and what remains unconfirmed

For 4-Hydroxy-3-nitrobenzaldehyde, the listing is a starting point for identification, not a test certificate for the supplied batch. Read the purity result together with its method and batch number. A required water content, impurity profile or physical parameter needs its own specification entry. We do not add these values based on a similar isomer.

Sources and catalogue variants

4-Hydroxy-3-nitrobenzaldehyde

Editorial material based on the OCA catalogue checked on 31 October 2026. Product data remain catalogue claims. This article does not replace the current specification, certificate of analysis or manufacturer’s instructions.