Molekula
Lactose
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
Lactose is a disaccharide sugar derived from milk, commonly used as a filler or binder in pharmaceutical formulations and as a nutrient in microbiological media. It has a CAS number of 14641-93-1, a molecular formula of C12H22O11, and a molecular weight of 342.3 g/mol. It is stable at ambient storage conditions. Molekula supplies lactose 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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100 g — £29.50 per pack ex VAT · £35.40 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 Off-white powder |
| Purity | ⩾ 98.0% |
| Identification (IR) | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 201 - 202 °C |
Source: PubChem CID 84571 (Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 89982198 |
| CAS Number | 14641-93-1 |
| IUPAC Name | (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol |
| EC Number | 238-691-8 |
| Molecular Formula | C12H22O11 |
| Molecular Weight | 342.3 |
| Exact Mass | 342.1162 |
| SMILES | C([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO)O)O)O)O |
| InChIKey | GUBGYTABKSRVRQ-XLOQQCSPSA-N |
| InChI | InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11+,12+/m1/s1 |
| PubChem CID | 84571 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 1702190000 |
| Tariff Code | 1702190000 |
Safety & GHS
Hazard statements
- USH01 May form combustible dust concentrations in air
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
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
- 1-beta-D-Galactopyranosyl-4-alpha-D-glucopyranose
- 4-O-beta-D-Galactopyranosyl-alpha-D-glucopyranose
- A-MILK SUGAR
- alpha-D-Glucopyranose, 4-O-beta-D-galactopyranosyl-
- alpha-D-lactose
- alpha-lactose
- beta-D-galactopyranosyl-(1->4)-alpha-D-glucopyranose
- GlyTouCan:G88362QR
- Lactobiose
- Osmolactan
Frequently asked questions
What is lactose used for?
Lactose is commonly used as a filler or binder in pharmaceutical formulations and as a nutrient in cell culture media.
What is the chemical formula and molecular weight of lactose?
The formula is C12H22O11 with a molecular weight of 342.3 g/mol.
How should lactose be stored?
Lactose should be stored at ambient temperature, protected from moisture and light.
What grade of lactose does Molekula supply?
Molekula supplies pharmaceutical-grade lactose, suitable for use in drug formulations and biotech applications.
Can Molekula supply lactose in bulk?
Yes, Molekula can supply lactose in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with a lactose order?
Each order includes a Certificate of Analysis (CoA) and, upon request, a Material Safety Data Sheet (MSDS).
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.