Molekula
Histamine free base
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
Histamine free base is a nitrogen-containing organic compound used in biochemical research and pharmaceutical development. It serves as a key intermediate in studies involving histamine receptors and allergic responses. Available with a CAS number of 51-45-6, its molecular formula is C5H9N3 and molecular weight is 111.15 g/mol. Store at -15 to -20 °C. Signal word: Danger. Molekula supplies Histamine free base 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
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — $147.90 per pack
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 | White to light yellow Crystalline powder and/or chunks |
| Assay | ≥96% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 139 °C (phosphate salt) |
| Boiling Point | 209-210 °C at 18 mmHg |
| pKa | pKa = 9.756 |
Source: PubChem CID 774 (DrugBank, HSDB, ChEMBL)
Identification
| Property | Value |
|---|---|
| SKU | 33208282 |
| CAS Number | 51-45-6 |
| IUPAC Name | 2-(1H-imidazol-5-yl)ethanamine |
| EC Number | 200-100-6 |
| Molecular Formula | C5H9N3 |
| Molecular Weight | 111.15 |
| Exact Mass | 111.0796 |
| SMILES | C1=C(NC=N1)CCN |
| InChIKey | NTYJJOPFIAHURM-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H9N3/c6-2-1-5-3-7-4-8-5/h3-4H,1-2,6H2,(H,7,8) |
| PubChem CID | 774 |
| UN Number | UN2811 |
| REACH Code | Y110 |
| HTS Code | 2933299000 |
| Tariff Code | 2933299090 |
Safety & GHS
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Toxic
GHS06
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Serious Health Hazard
GHS08
Hazard statements
- H301 Toxic if swallowed
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H341 Suspected of causing genetic defects
- H361 Suspected of damaging fertility or the unborn child
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- 1H-Imidazole-4-ethanamine
- 2-(1H-imidazol-5-yl)ethanamine
- 2-(4-Imidazolyl)ethylamine
- 5-Imidazoleethylamine
- Eramin
- Ergamine
- Ergotidine
- Free histamine
- histamine
- Theramine
Frequently asked questions
What is Histamine free base used for?
Histamine free base is primarily used in biochemical research, particularly in studies involving histamine receptors and allergic responses.
What is the chemical formula and molecular weight of Histamine free base?
The chemical formula is C5H9N3 and the molecular weight is 111.15 g/mol.
How should Histamine free base be stored?
It should be stored at temperatures between -15 to -20 °C to maintain stability and prevent degradation.
What grade of Histamine free base is available?
Molekula supplies Histamine free base in research grade, suitable for laboratory use.
Can Molekula supply Histamine free base in bulk?
Yes, Molekula can supply Histamine free base in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of Histamine free base?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.