Molekula
Cimetidine
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
Cimetidine is a histamine H2-receptor antagonist primarily used as an active pharmaceutical ingredient to reduce stomach acid production, treating conditions like heartburn, ulcers, and gastroesophageal reflux disease. It is also utilized in medical research and formulations. This chemical has a CAS number of 51481-61-9, a molecular formula of C10H16N6S, and a molecular weight of 252.34 g/mol. It must be stored between 2 to 8°C and carries a **Danger** signal word due to its hazardous properties. Molekula supplies Cimetidine 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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5 g — £76.20 per pack ex VAT · £91.44 inc. VAT
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 or almost white, crystalline powder. Odorless, bitter taste. |
| Heavy metals | ≤ 0.001% |
| Loss on Drying | ≤ 0.5% |
| Residue on Ignition | ≤ 0.1% |
| Total Impurities | ≤ 1.0% |
| Aerobic Bacterial Count | ≤ 1000 cfu/g |
| Identification (IR) | Consistent with spectra obtained with Cimetidine CRS |
| Assay (dried basis) | ≥ 99.0% |
| Molds & Yeasts | ≤ 100 cfu/g |
| Absorption coefficient | 751 - 797 |
| Impurities - Single | ≤ 0.2% |
| Chemical identification | Positive reaction |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals |
| Odour | Unpleasant odor |
| Melting Point | 142 °C |
| Solubility (other solvents) | Soluble in alcohol |
| pKa | pKa = 6.8 |
| log P (octanol/water) | 0.40 |
Source: PubChem CID 2756 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 70637565 |
| CAS Number | 51481-61-9 |
| IUPAC Name | 1-cyano-2-methyl-3-[2-[(5-methyl-1H-imidazol-4-yl)methylsulfanyl]ethyl]guanidine |
| EC Number | 257-232-2 |
| Molecular Formula | C10H16N6S |
| Molecular Weight | 252.34 |
| Exact Mass | 252.1157 |
| SMILES | CC1=C(N=CN1)CSCCNC(=NC)NC#N |
| InChIKey | AQIXAKUUQRKLND-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H16N6S/c1-8-9(16-7-15-8)5-17-4-3-13-10(12-2)14-6-11/h7H,3-5H2,1-2H3,(H,15,16)(H2,12,13,14) |
| PubChem CID | 2756 |
| REACH Code | Y110 |
| HTS Code | 29332990 |
| Tariff Code | 2933299090 |
Safety & GHS
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Serious Health Hazard
GHS08
Hazard statements
- H318 Causes serious eye damage
- H351 Suspected of causing cancer
- H360 May damage fertility or the unborn child
Precautionary statements
- P263 Avoid contact during pregnancy/while nursing
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: 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
- Acibilin
- Acinil
- Cimal
- Cimetag
- Eureceptor
- Gastromet
- Tametin
- Ulcedin
- Ulcimet
- Ulcomedina
Frequently asked questions
What is cimetidine used for?
Cimetidine is primarily used as a histamine H2-receptor antagonist to reduce stomach acid production, treating conditions like heartburn, ulcers, and gastroesophageal reflux disease (GERD).
What is the chemical formula and molecular weight of cimetidine?
The chemical formula is **C10H16N6S**, and the molecular weight is **252.34 g/mol**.
How should cimetidine be stored?
Store cimetidine at **2 to 8°C** in a cool, dry place, away from direct sunlight and incompatible substances.
What grades or purities of cimetidine does Molekula supply?
Molekula supplies **pharmaceutical-grade cimetidine** for research, development, and manufacturing applications.
Can Molekula supply cimetidine in bulk quantities?
Yes, Molekula can provide cimetidine in bulk, with quantities tailored to meet your specific requirements.
What documentation comes with a cimetidine order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
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.