3-Amino-4-hydroxybenzenesulfonic acid

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Available Options

Package: 100 g
Purity: 95%
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Package: 25 g
Purity: 95%
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Purity: 95%
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Loading RDKit molecule structure...

InChIKey: ULUIMLJNTCECJU-UHFFFAOYSA-NC6H7NO4S | MW 189.19

Chemical Absolute Identifiers

CAS Number

98-37-3

PubChem CID

7385

Molecular Formula

C6H7NO4S

Molecular Weight

189.19 g/mol

Exact Mass

189.009579

InChIKey

ULUIMLJNTCECJU-UHFFFAOYSA-N

SMILES String

C1=CC(=C(C=C1S(=O)(=O)O)N)O

Physical Properties

Appearance

Rhombic brown crystals. (NTP, 1992)

Water Solubility

1 mol/L

Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.

Catalog Facts

Structural features

3-Amino-4-hydroxybenzenesulfonic acid (CAS 98-37-3) is listed in the Advanced Chemicals portfolio, with molecular formula C6H7NO4S and molecular weight 189. 19 g/mol.

Sourcing context

Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.

Research use context

Intended for research building-block and synthetic chemistry workflows; structure-derived tags include nitrogen-containing heterocycle.

Documentation needs

COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.

Applications & Classification

Organic Building Blocks Synthetic ChemistryResearch intermediateCustom synthesis building blockResearch chemical sourcingCustom synthesis and catalog availability reviewCOA, SDS, pricing, and fulfillment workflow

Safety & Handling

Handling & Storage

Keep container tightly closed and dry.
Store in a well-ventilated place.
Avoid contact with skin and eyes.

PPE

Respiratory protection if needed

First Aid

Do not give anything to an unconscious person.
Rinse mouth with water.

Stability / Reactivity

and reactivity.
Carbon monoxide, carbon dioxide, nitrogen oxides, sulfur oxides.

Disposal

Waste product: Dispose of remaining and non-recyclable solutions to a licensed company.
Contact a professional institution with a waste disposal license to handle this substance.

Show additional safety reference fields

Fire Fighting

If necessary, wear a self-contained breathing apparatus for firefighting.

Accidental Release

Do not generate dust when collecting and disposing.
Sweep and shovel up.

For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.

Preliminary Safety Reference

For supplier-issued SDS or COA, submit a documentation request.

Safety Reference / SDS Request

Names & Synonyms / External Identifiers

Chemical Name

3-Amino-4-hydroxybenzenesulfonic acid

Names & Synonyms

2-AMINOPHENOL-4-SULFONIC ACID4-Hydroxymetanilic acid2-Amino-1-phenol-4-sulfonic acid2-Amino-4-sulfophenolBenzenesulfonic acid, 3-amino-4-hydroxy-

Show all synonyms

o-Aminophenol-p-sulfonic acid2-Hydroxy-5-sulfoaniline4-Hydroxy-3-aminobenzenesulfonic acidCCRIS 4584EC 202-662-81-AMINO-2-HYDROXY-5-BENZENESULFONIC ACID2Amino4sulfophenol2Hydroxy5sulfoaniline4Hydroxymetanilic acidoAminophenolpsulfonic acidMetanilic acid, 4hydroxy2Aminophenol4sulfonic acid2Aminophenol4sulphonic acid2Amino1phenol4sulfonic acid2-aminophenol-4-sulphonic acid

External Identifiers

EC NUMBER: 202-662-8DSSTOX SUBSTANCE ID: DTXSID5024500CHEMBL ID: CHEMBL1455467UNII: 4WE7CX7RD5

Experimental Spectrum References

13C NMR Spectra 1D NMR Spectra 1H NMR Spectra ATR-IR Spectra — Bio-Rad Laboratories, Inc.FTIR Spectra

Documentation & Compliance Facts

Compliance Facts

Shipment review: Required

Documentation available by request

Certificate of Analysis (COA): By request

Supplier Safety Data Sheet (SDS): By request

Purity and pack size confirmation: By request

Availability and lead time review: Confirmed by RFQ

Shipment documentation review: By request

For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference

What happens after RFQ

1We review the CAS identity, quantity, and documentation request.
2We check sourcing options, supplier availability, COA/SDS, purity, pack size, and lead time.
3We review destination and shipment documentation needs when applicable.
4We follow up with a quotation or clarification request.

Text Reference Cues

Show non-linked catalog cues

Non-public related references

Benzenesulfonic acid, 3,4-diamino-CAS 7474-78-4

4-Amino-1,3-benzenedisulfonic acidCAS 137-51-9

Benzenesulfonic acid, 3-amino-4-methoxy-CAS 98-42-0

6-Amino-2-naphthalenesulfonic acidCAS 93-00-5

2-Naphthol-3,6-disulfonic acidCAS 148-75-4

Non-public references are shown as text only and do not imply equivalence, availability, or shared use.

Catalog navigation

Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.

CAS 7474-78-4Benzenesulfonic acid, 3,4-diamino-CAS 137-51-94-Amino-1,3-benzenedisulfonic acid CAS 98-42-0Benzenesulfonic acid, 3-amino-4-methoxy-CAS 93-00-56-Amino-2-naphthalenesulfonic acid CAS 148-75-42-Naphthol-3,6-disulfonic acid CAS 1002310-00-0Tert-butyl 1-(2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethylcarbamate CAS 1005174-17-3(E)-3-(2-Propyl-6-(trifluoromethyl)pyridin-3-yl)acrylic acid CAS 1018125-49-92-(3-Cyclopropyl-6-ethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid CAS 1018128-07-8Isopropyl 4-chloro-2-methylquinoline-6-carboxylate CAS 1018142-22-76-cyclopropyl-1-(2,2-difluoroethyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid

RFQ questions for CAS 98-37-3

What are the key identifiers for 3-Amino-4-hydroxybenzenesulfonic acid (CAS 98-37-3)?

3-Amino-4-hydroxybenzenesulfonic acid is identified by CAS 98-37-3, with molecular formula C6H7NO4S, molecular weight 189.19, InChIKey ULUIMLJNTCECJU-UHFFFAOYSA-N.

Can I request a COA for CAS 98-37-3?

Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.

Can I request supplier SDS for 3-Amino-4-hydroxybenzenesulfonic acid?

Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.

Is CAS 98-37-3 available for quotation?

Availability, pack size, lead time, and pricing are confirmed through RFQ.

Can MolGraph support bulk sourcing or custom synthesis review?

Submit the CAS number, quantity, purity requirement, and destination country for sourcing review.

Catalog Facts

Structural features

3-Amino-4-hydroxybenzenesulfonic acid (CAS 98-37-3) is listed in the Advanced Chemicals portfolio, with molecular formula C6H7NO4S and molecular weight 189. 19 g/mol.

Sourcing context

Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.

Research use context

Intended for research building-block and synthetic chemistry workflows; structure-derived tags include nitrogen-containing heterocycle.

Documentation needs

COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.

Safety & Handling

Handling & Storage

Keep container tightly closed and dry.
Store in a well-ventilated place.
Avoid contact with skin and eyes.

PPE

Respiratory protection if needed

First Aid

Do not give anything to an unconscious person.
Rinse mouth with water.

Stability / Reactivity

and reactivity.
Carbon monoxide, carbon dioxide, nitrogen oxides, sulfur oxides.

Disposal

Waste product: Dispose of remaining and non-recyclable solutions to a licensed company.
Contact a professional institution with a waste disposal license to handle this substance.

Show additional safety reference fields

Fire Fighting

If necessary, wear a self-contained breathing apparatus for firefighting.

Accidental Release

Do not generate dust when collecting and disposing.
Sweep and shovel up.

For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.

Preliminary Safety Reference

For supplier-issued SDS or COA, submit a documentation request.

Safety Reference / SDS Request

Names & Synonyms / External Identifiers

Chemical Name

3-Amino-4-hydroxybenzenesulfonic acid

Names & Synonyms

2-AMINOPHENOL-4-SULFONIC ACID4-Hydroxymetanilic acid2-Amino-1-phenol-4-sulfonic acid2-Amino-4-sulfophenolBenzenesulfonic acid, 3-amino-4-hydroxy-

Show all synonyms

External Identifiers

EC NUMBER: 202-662-8DSSTOX SUBSTANCE ID: DTXSID5024500CHEMBL ID: CHEMBL1455467UNII: 4WE7CX7RD5

Documentation & Compliance Facts

Compliance Facts

Shipment review: Required

Documentation available by request

Certificate of Analysis (COA): By request

Supplier Safety Data Sheet (SDS): By request

Purity and pack size confirmation: By request

Availability and lead time review: Confirmed by RFQ

Shipment documentation review: By request

For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference

Text Reference Cues

Show non-linked catalog cues

Non-public related references

Benzenesulfonic acid, 3,4-diamino-CAS 7474-78-4

4-Amino-1,3-benzenedisulfonic acidCAS 137-51-9

Benzenesulfonic acid, 3-amino-4-methoxy-CAS 98-42-0

6-Amino-2-naphthalenesulfonic acidCAS 93-00-5

2-Naphthol-3,6-disulfonic acidCAS 148-75-4

Non-public references are shown as text only and do not imply equivalence, availability, or shared use.

RFQ questions for CAS 98-37-3

What are the key identifiers for 3-Amino-4-hydroxybenzenesulfonic acid (CAS 98-37-3)?

3-Amino-4-hydroxybenzenesulfonic acid is identified by CAS 98-37-3, with molecular formula C6H7NO4S, molecular weight 189.19, InChIKey ULUIMLJNTCECJU-UHFFFAOYSA-N.

Can I request a COA for CAS 98-37-3?

Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.

Can I request supplier SDS for 3-Amino-4-hydroxybenzenesulfonic acid?

Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.

Is CAS 98-37-3 available for quotation?

Availability, pack size, lead time, and pricing are confirmed through RFQ.

Can MolGraph support bulk sourcing or custom synthesis review?

Submit the CAS number, quantity, purity requirement, and destination country for sourcing review.

Sourcing & RFQ

Available Options

Chemical Absolute Identifiers

Physical Properties

Catalog Facts

Applications & Classification

Safety & Handling

Handling & Storage

PPE

First Aid

Stability / Reactivity

Disposal

Fire Fighting

Accidental Release

Related Catalog Entries

RFQ questions for CAS 98-37-3

3-Amino-4-hydroxybenzenesulfonic acid

Sourcing & RFQ

Available Options

Chemical Absolute Identifiers

Physical Properties

Catalog Facts

Applications & Classification

Safety & Handling

Handling & Storage

PPE

First Aid

Stability / Reactivity

Disposal

Fire Fighting

Accidental Release

Related Catalog Entries

RFQ questions for CAS 98-37-3