Molekula
5-Aminosalicylic acid 98.5% min.
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
5-Aminosalicylic acid (5-ASA) is an aromatic compound primarily used in pharmaceuticals as an anti-inflammatory agent for treating inflammatory bowel diseases like ulcerative colitis and Crohn’s disease. Industrially, it serves as an intermediate in manufacturing azo and sulfur dyes and light-sensitive paper, and it is the active ingredient in mesalamine medicines. It is also employed in research for its biochemical properties. This product has a purity of 98.5% minimum, with a CAS number of 89-57-6, molecular formula C7H7NO3 (or C6H3(OH)(NH2)COOH), and a molecular weight of 153.14 g/mol. It must be stored between 2–8°C and carries a signal word of Warning due to moderate hazards. Molekula supplies 5-Aminosalicylic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Off-white powder |
| Grade | USP40 Grade |
| Assay | 98.5 - 101.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White to pinkish crystals |
| Melting Point | 283 °C |
| Solubility (other solvents) | Slightly soluble in water, alcohol; more soluble in hot water; soluble in hydrochloric acid |
| Vapour Pressure | 0.00000006 mmHg |
Source: PubChem CID 4075 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 90031943 |
| CAS Number | 89-57-6 |
| IUPAC Name | 5-amino-2-hydroxybenzoic acid |
| EC Number | 201-919-1 |
| Molecular Formula | C6H3(OH)(NH2)COOH |
| Molecular Weight | 153.14 |
| Exact Mass | 153.0426 |
| SMILES | C1=CC(=C(C=C1N)C(=O)O)O |
| InChIKey | KBOPZPXVLCULAV-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H7NO3/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,9H,8H2,(H,10,11) |
| PubChem CID | 4075 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2922504000 |
| Tariff Code | 2922500090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 5-Amino-2-hydroxybenzoic acid
- 5-ASA
- Benzoic acid, 5-amino-2-hydroxy-
- Fisalamine
- Lialda
- m-Aminosalicylic acid
- mesalamine
- Mesalazina
- Mesalazine
- sfRowasa
Frequently asked questions
What is 5-Aminosalicylic acid primarily used for?
5-Aminosalicylic acid (mesalamine) is primarily used as an anti-inflammatory medication for treating ulcerative colitis, Crohn's disease, and other gastrointestinal conditions.
What is the chemical formula and molecular weight of 5-Aminosalicylic acid?
The chemical formula is C₇H₇NO₃ (or C₆H₃(OH)(NH₂)COOH), and the molecular weight is 153.14 g/mol.
What is the minimum purity grade available for this product?
Molekula supplies 5-Aminosalicylic acid with a minimum purity of 98.5%.
How should 5-Aminosalicylic acid be stored?
Store at 2–8°C in a cool, dry place, away from direct light and moisture.
Can Molekula supply this product in bulk quantities?
Yes, Molekula can provide bulk quantities of 5-Aminosalicylic acid upon request.
What documentation is provided with an order of this product?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.