Erythromycin thiocyanate is a thiocyanate derivative of erythromycin, belonging to macrolide antibiotics, and primarily serves as an active pharmaceutical ingredient (API) for human medications. By inhibiting bacterial protein synthesis, it effectively combats various Gram-positive bacteria (such as streptococci and staphylococci), some Gram-negative bacteria (such as *Haemophilus influenzae*), and atypical pathogens (such as mycoplasma and chlamydia). With good bioavailability and stability, erythromycin thiocyanate is suitable for preparing oral formulations, injections, or topical medications. Clinically, it is mainly used for the treatment of respiratory tract infections, skin and soft tissue infections, urogenital system infections, and other diseases. This API must comply with strict pharmacopoeia standards to ensure high purity and low impurities, meeting the quality control requirements for drug production. In China, the production of erythromycin thiocyanate began in the 1980s-1990s, but the output was very low, less than 100 tons. By 2007, erythromycin thiocyanate had become the largest export variety among macrolide antibiotics in China, with a production capacity exceeding 10,000 tons.

Broad-spectrum antibacterial activity—Significantly inhibits a variety of Gram-positive bacteria, some Gram-negative bacteria, and atypical pathogens (such as mycoplasma and chlamydia).

Stable and easily soluble—The introduction of thiocyanate groups improves the water solubility and chemical stability of erythromycin, facilitating formulation processing.

Clear mechanism of action—Exerts bacteriostatic effects by binding to the 50S ribosomal subunit of bacteria to block protein synthesis.

Wide range of indications—Suitable for the treatment of bacterial infections in the respiratory tract, skin, urogenital system, etc.

Compliant with international standards—Strictly adheres to pharmacopoeia standards to ensure high purity, low residual solvents, and impurities, guaranteeing medication safety.

Adaptable to multiple formulations—Can be used in the production of various formulations such as tablets, capsules, injections, and topical preparations.