Molekula
Pristinamycin
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
Pristinamycin is a streptogramin antibiotic used in human medicine, marketed as Pyostacine, for the oral treatment of bacterial infections, particularly staphylococcal and streptococcal infections caused by gram-positive bacteria. It combines two components, pristinamycin IA and IIA, for synergistic antimicrobial action. This chemical has the CAS number 270076-60-3, a molecular formula of C73H89N11O17, and a molecular weight of 1392.55 g/mol. It must be stored at -15 to -20°C, with a signal word of Warning for safety handling. Molekula supplies Pristinamycin 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.
-
25 mg — £89.70 per pack ex VAT · £107.64 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 | Light yellow powder |
| Melting Point | 150 - 154°C |
| Water | ≤ 3.0% |
| Specific rotation | -128° to -134° |
| Heavy metals | ≤ 10ppm |
| Assay | Pristinamycin la 28% ~ 32%, Pristinamycin lla 68% ~ 72% |
| Total Impurities | ≤ 3.0% |
| PIA | 28% - 32% |
| PIIA | 68% - 72% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 31084931 |
| CAS Number | 270076-60-3 |
| IUPAC Name | N-(3-benzyl-12-ethyl-4,16-dimethyl-2,5,11,14,18,21,24-heptaoxo-19-phenyl-17-oxa-1,4,10,13,20-pentazatricyclo[20.4.0.06,10]hexacosan-15-yl)-3-hydroxypyridine-2-carboxamide;(12Z,17Z,19Z)-21-hydroxy-11,19-dimethyl-10-propan-2-yl-9,26-dioxa-3,15,28-triazatricyclo[23.2.1.03,7]octacosa-1(27),6,12,17,19,25(28)-hexaene-2,8,14,23-tetrone |
| Molecular Formula | C73H89N11O17 |
| Molecular Weight | 1392.55 |
| Exact Mass | 1348.6016 |
| SMILES | CCC1C(=O)N2CCCC2C(=O)N(C(C(=O)N3CCC(=O)CC3C(=O)NC(C(=O)OC(C(C(=O)N1)NC(=O)C4=C(C=CC=N4)O)C)C5=CC=CC=C5)CC6=CC=CC=C6)C.CC1/C=C\C(=O)NC/C=C\C(=C/C(CC(=O)CC2=NC(=CO2)C(=O)N3CCC=C3C(=O)OC1C(C)C)O)\C |
| InChIKey | MVTQIFVKRXBCHS-FHWPYUEJSA-N |
| InChI | InChI=1S/C43H49N7O10.C28H35N3O7/c1-4-29-40(56)49-21-12-17-30(49)41(57)48(3)32(23-26-13-7-5-8-14-26)42(58)50-22-19-28(51)24-31(50)37(53)47-35(27-15-9-6-10-16-27)43(59)60-25(2)34(38(54)45-29)46-39(55)36-33(52)18-11-20-44-36;1-17(2)26-19(4)9-10-24(34)29-11-5-7-18(3)13-20(32)14-21(33)15-25-30-22(16-37-25)27(35)31-12-6-8-23(31)28(36)38-26/h5-11,13-16,18,20,25,29-32,34-35,52H,4,12,17,19,21-24H2,1-3H3,(H,45,54)(H,46,55)(H,47,53);5,7-10,13,16-17,19-20,26,32H,6,11-12,14-15H2,1-4H3,(H,29,34)/b;7-5-,10-9-,18-13- |
| PubChem CID | 11979535 |
| REACH Code | Y110 |
| HTS Code | 2941.90.10.50 |
| Tariff Code | 2941900000 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face 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
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
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
- Pristinamycine
- Pyostacine
- Pyostacine 500
- Stafytracine
- Stajac 22
- Starfac
Frequently asked questions
What is pristinamycin used for?
Pristinamycin is primarily used as an antibiotic, particularly effective against Gram-positive bacteria, including *Staphylococcus* and *Streptococcus* species, and is sometimes used in veterinary medicine.
What is the chemical formula and molecular weight of pristinamycin?
The chemical formula is **C73H89N11O17**, and the molecular weight is **1392.55 g/mol**.
How should pristinamycin be stored?
Pristinamycin must be stored at **-15 to -20°C** to maintain stability and potency.
What grades or purities of pristinamycin does Molekula supply?
Molekula supplies pristinamycin in **pharmaceutical-grade purity**, suitable for research, development, and clinical applications.
Can Molekula supply pristinamycin in bulk quantities?
Yes, Molekula can provide pristinamycin in bulk, with quantities tailored to meet customer requirements—please contact us for specific inquiries.
What documentation comes with a pristinamycin order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** to ensure compliance and quality assurance.
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.