| Powder: | Yes |
|---|---|
| Customized: | Non-Customized |
| Certification: | GMP, ISO 9001, USP, BP |
| Suitable for: | Elderly, Adult |
| State: | Solid |
| Purity: | >99% |
| Samples: |
|---|
| Customization: |
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Suppliers with verified business licenses
Audited Supplier | Product Name | Dirithromycin |
| Appearance | crystals |
| CAS NO. | 62013-04-1 |
| Molecular Formula | C42H78N2O14 |
| Molecular Weight | 835.07 |
| Density | 1.19 g/cm3 |
| Melting Point | 185 - 189ºC |
| Boiling Point | 871.8ºC at 760 mmHg |
| Flash Point | 481ºC |
| Assay | 99% min |
| Characteristics |
A white or almost white, crystalline powder |
| Soluble in water | |
| Identification |
The retention time of major peak in the chromatogram of the sample corresponds to the standard |
| IR | |
| Dirithromycin 15S-epimer% | ≤1.5 |
| Heavy metals | ≤20ppm |
| Water% | ≤1.0 |
| Sulphated ash% | ≤0.1 |
| Impurities% |
9-(S)-erythromycylamine ≤1.5 |
| Other single impurity ≤1.0 | |
| Total impurities ≤4.0 | |
| Assay% | 96.0~102.0 |
| Particle size | 100% through 60 or 80 mesh sieve |
| Residual solvent | Acetonitrile≤0.1% |
| Ethyl ether≤5000ppm | |
| Dichloromethane≤600ppm | |
| Methanol≤3000ppm | |
| 2-propanol≤5000ppm |
Dirithromycin is a macrolide antibiotic pro-drug of 9S-erythromycylamine, a close analogue of erythromycin in which the 9-keto group is replaced with an amino group in the S-configuration. Although erythromycylamine overcomes the acid instability of erythromycin, it is poorly absorbed following oral administration. Dirithromycin is formed by reacting erythromycylamine with an aldehyde to form a Schiff base which undergoes cyclisation to an oxazine with the C11-alcohol. Dirithromycin provides higher tissue levels and prolonged in vivo half-life by slowly releasing erythromycylamine.
Shandong Longilat Biotechnology Co., Ltd was established in 2015. It is a high-tech professional and technological enterprise integrating R & D, production, and sales.
Longilat 's main products are food additives, plant extracts, cosmetic raw materials, feed additives, animal extract, amino acids and vitamins. Most of our products are derived from natural plants. Marketing services are available in many countries around the world.
1.Can I get some samples?
Yes, usually a 10-20g sample.
2.What's your MOQ?
Our MOQ is flexible, usually 1kg-10kg for a trial order is acceptable.
3. Is there a discount?
Of course, welcome to contact us. Price would be different based on different quantities. For bulk quantity, we will have a discount for you.
4. How to deliver the goods?
≤50kg ship by FedEx or DHL etc, ≥50kg ship by Air, ≥100kg can be shipped by Sea. If you have special request on delivery, please contact us.
5. What is the shelf life for the products?
Most products shelf life 24-36 months.
6. What's your delivery time?
Usually, shipment will be made within 7-15 days against confirmed order.
7. How about the validity of the offer?
Usually, our offer is valid for 1 week. However, validity might vary between different products.
Suppliers with verified business licenses
Audited Supplier 
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