Molekula
Proteinase K
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Proteinase K is a serine protease used for digesting proteins in molecular biology applications such as DNA and RNA extraction. It is stable at high temperatures and denaturing conditions, making it ideal for inactivating nucleases. Available with CAS number 39450-01-6, molecular formula C29H27N2O12P, and molecular weight 626.50 g/mol. Store at -15 to -20 °C. Hazard classification includes signal word Danger.
Molekula supplies Proteinase K in 100 mg packs, from £123.96 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 7 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
In stock — same-day dispatch
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 mg — £103.30 per pack ex VAT · £123.96 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 lyophilised powder |
| Enzyme Activity | ≥ 30U/mg min dry weight |
| Specific Activity | ≥ 40U/mg min protein |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Neutral |
For research use only. Not for human use.
Identification
| Property | Value |
|---|---|
| SKU | 49085587 |
| CAS Number | 39450-01-6 |
| Molecular Formula | C29H27N2O12P |
| Molecular Weight | 626.50 |
| REACH Code | Y110 |
| HTS Code | 3507.90.70.00 |
| Tariff Code | 3507909090 |
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
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- 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, 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Proteinase K used for?
Proteinase K is used for digesting proteins in molecular biology applications, such as DNA and RNA extraction, and in the purification of nucleic acids.
What is the chemical formula and molecular weight of Proteinase K?
The formula is C29H27N2O12P and the molecular weight is 626.50 g/mol.
How should Proteinase K be stored?
Proteinase K should be stored at -15 to -20 °C to maintain stability and activity.
What grade of Proteinase K does Molekula supply?
Molekula supplies Proteinase K as a white lyophilised powder with an enzyme activity of at least 30 U/mg dry weight and a specific activity of at least 40 U/mg protein.
Can Molekula supply Proteinase K in bulk?
Yes, Molekula can supply Proteinase K in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a Proteinase K order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Where can I buy Proteinase K?
Directly from Molekula, which lists Proteinase K in 100 mg packs from £123.96 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.