Molekula
2-Nitrophenyl-beta-D-galactopyranoside (ONPG)
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
2-Nitrophenyl-beta-D-galactopyranoside (ONPG) is a synthetic substrate used in biochemical assays to detect beta-galactosidase enzyme activity. It is commonly employed in microbiology and molecular biology research. CAS: 369-07-3, Molecular Formula: C12H15NO8, Molecular Weight: 301.25, Storage: 2 to 8 °C. Molekula supplies ONPG from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
2-Nitrophenyl-beta-D-galactopyranoside (ONPG) is a synthetic substrate used in biochemical assays to detect beta-galactosidase enzyme activity. It is commonly employed in microbiology and molecular biology research. CAS: 369-07-3, Molecular Formula: C12H15NO8, Molecular Weight: 301.25, Storage: 2 to 8 °C. Molekula supplies ONPG from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
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.
-
25 g — £77.70 per pack
-
100 g — £240.10 per pack
Need a different quantity or pack?
Tell us the quantity you actually need — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price, usually within one working day.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to off -white powder |
| Purity (HPLC) | Min. 98.0% |
| Identification | Conforms to reference |
| Water (KF) | Max. 0.5% |
| Solution (1% in Water) | Clear,colourless to slightly yellow solution |
| Specific optical rotation [α]D20(c=1, H2O) | - 65.0 ° C to -73.0 ° C |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 43511407 |
| CAS Number | 369-07-3 |
| Molecular Formula | C12H15NO8 |
| Molecular Weight | 301.25 |
| SMILES | C1=CC=C(C(=C1)[N+](=O)[O-])O[C@H]2[C@@H]([C@H]([C@H]([C@H](O2)CO)O)O)O |
| REACH Code | Y113 |
| HTS Code | 29400060 |
| Tariff Code | 2940000080 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
No alternate names recorded for this product.
Frequently asked questions
What is 2-Nitrophenyl-beta-D-galactopyranoside (ONPG) used for?
ONPG is primarily used as a chromogenic substrate in enzymatic assays, particularly for detecting beta-galactosidase activity in microbiology and molecular biology.
What is the chemical formula and molecular weight of ONPG?
The formula is C12H15NO8 with a molecular weight of 301.25 g/mol.
How should ONPG be stored?
ONPG should be stored at 2 to 8 °C, protected from light and moisture.
What grade of ONPG does Molekula supply?
Molekula supplies ONPG in high-purity research grade, suitable for laboratory use.
Can Molekula supply ONPG in bulk quantities?
Yes, Molekula can supply ONPG in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an ONPG order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS), available upon request.
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.