Molekula
IPTG (Animal-free origin D-Galactose)
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
IPTG (Isopropyl β-D-1-thiogalactopyranoside) is a synthetic inducer used in molecular biology to activate lac operon-driven gene expression in bacteria, enabling protein production. It is animal-free and derived from D-galactose. This high-purity reagent has a CAS number of 367-93-1, molecular formula C9H18O5S, and a molecular weight of 238.30 g/mol. Store at 2–8°C and handle with caution (signal word: Warning). Molekula supplies IPTG 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 — £15.20 per pack ex VAT · £18.24 inc. VAT
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5 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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25 g — £54.20 per pack ex VAT · £65.04 inc. VAT
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100 g — £171.30 per pack ex VAT · £205.56 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 to almost white crystalline powder |
| Melting Point | 110.0 - 114.0°C |
| pH | 5.0 - 7.0 |
| Solubility | Soluble in water and methanol |
| Specific optical rotation | -31.5° +/- 3.0 |
| 1,4-Dioxane | Not detected |
| Water (KF) | ≤ 1.0% |
| Purity HPLC dry basis | ≥ 99.0% |
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 |
|---|---|
| Melting Point | 121 °C |
Source: PubChem CID 656894 (DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 66865688 |
| CAS Number | 367-93-1 |
| IUPAC Name | (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-propan-2-ylsulfanyloxane-3,4,5-triol |
| EC Number | 206-703-0 |
| Molecular Formula | C9H18O5S |
| Molecular Weight | 238.30 |
| Exact Mass | 238.0875 |
| SMILES | CC(C)S[C@H]1[C@@H]([C@H]([C@H]([C@H](O1)CO)O)O)O |
| InChIKey | BPHPUYQFMNQIOC-NXRLNHOXSA-N |
| InChI | InChI=1S/C9H18O5S/c1-4(2)15-9-8(13)7(12)6(11)5(3-10)14-9/h4-13H,3H2,1-2H3/t5-,6+,7+,8-,9+/m1/s1 |
| PubChem CID | 656894 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29389000 |
| Tariff Code | 2938909090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H351 Suspected of causing cancer
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- 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
- P309+311 IF exposed or you feel unwell: Call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, 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
- (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-propan-2-ylsulfanyloxane-3,4,5-triol
- beta-D-Galactopyranoside, 1-methylethyl 1-thio-
- IPTG
- Isopropyl 1-Thio-beta-D-galactopyranoside
- Isopropyl beta-D-1-thiogalactopyranoside
- isopropyl beta-thiogalactoside
- ISOPROPYL THIOGALACTOSIDE
- Isopropyl-beta-D-thiogalactopyranoside
- Isopropyl-beta-D-thiogalactoside
- Thiogalactoside, Isopropyl
Frequently asked questions
What is IPTG (Animal-free origin D-Galactose) used for?
IPTG is primarily used as an inducer in molecular biology to initiate gene expression in bacterial systems, particularly in the production of recombinant proteins.
What is the chemical formula and molecular weight of IPTG?
The chemical formula is **C9H18O5S**, and the molecular weight is **238.30 g/mol**.
How should IPTG be stored?
Store IPTG at **2 to 8°C** to maintain stability and potency.
What grades of IPTG does Molekula offer?
Molekula supplies **animal-free origin IPTG** in research-grade purity, suitable for molecular biology applications.
Can Molekula supply IPTG in bulk quantities?
Yes, Molekula can provide IPTG in bulk to accommodate large-scale research or production needs.
What documentation comes with an IPTG order?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), 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.