N-Nitroso-4-aminobenzoic acid
Impurity reference standard
- CAS number
- 91673-51-7
- InChIKey
- ZENPAMSYUBFEOH-UHFFFAOYSA-N
- Molecular formula
- C7H6N2O3
- Molecular weight
- 166.13
- Exact mass
- 166.0378 Da
About N-Nitroso-4-aminobenzoic acid
N-Nitroso-4-aminobenzoic acid is supplied as an analytical reference standard. It is registered under CAS number 91673-51-7.
The compound is characterised by its molecular formula C7H6N2O3 and a molecular weight of 166.13, with the two-dimensional structure shown above.
Computed from the structure, the compound has a monoisotopic mass of 166.0378 Da, a calculated LogP of 1.48, a topological polar surface area of 78.76 Ų. It presents 2 hydrogen-bond donors and 3 acceptors. These values are commonly used to anticipate chromatographic retention and to plan ionisation conditions during method development.
Each pack ships with a certificate of analysis together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Calculated properties
Derived from the two-dimensional structure above using RDKit. Computed values describe the parent structure and are provided as a reference for method development — they are not measured data.
- LogP (Crippen)
- 1.48
- Topological polar surface area
- 78.76 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 3
- Heavy atoms
- 12
- Rings
- 1
- Elemental composition
- C 50.61% · H 3.64% · N 16.86% · O 28.89%
Frequently asked questions
Does N-Nitroso-4-aminobenzoic acid come with a certificate of analysis?
Yes. Every pack ships with a certificate of analysis plus the supporting analytical data — HNMR, MS and HPLC or GC traces.
How is N-Nitroso-4-aminobenzoic acid uniquely identified?
The InChIKey ZENPAMSYUBFEOH-UHFFFAOYSA-N identifies the structure unambiguously, so it can be matched against your own registry or a public database.
Is a structure file available for N-Nitroso-4-aminobenzoic acid?
Yes. The two-dimensional structure is drawn on this page from the SMILES record, and the SMILES or a molfile can be supplied on request.
What pack sizes are available for N-Nitroso-4-aminobenzoic acid?
Standard packs run from milligram to gram quantities and ship from stock. Larger or custom synthesis requirements are quoted on request.
Need this standard, or a related one?
Send the compound name, CAS number or a structure file — we confirm availability, pack size and lead time, usually within one business day.