Tylvalosin Tartrate (cas 63428-13-7)

Tylosin 3-acetate 4B-(3-methylbutanoate) (2R,3R)-2,3-dihydroxybutanedioate Comprehensive Information Table ​Category ​Details ​CAS Number 63428-13-7 ​Synonyms Aivlosin Tartrate, Tylvalosin Tartrate, Acetylisovaleryltylosin Tartrate, Tylosin 3-acetate 4B-(3-methylbutanoate) ​Chemical Formula C₅₇H₉₃NO₂₅ ​Molecular Weight 1192.34 g/mol ​EINECS Number 256-145-7 ​Melting Point 208–211°C ​Solubility Slightly soluble in DMSO and methanol; practically insoluble in water ​Appearance White to off-white powder ​Stability Hygroscopic; requires inert atmosphere and storage at -20°C ​Optical Activity [α]²⁵/D +54° (c = 2 in H₂O) ​Bulk Density ~640 kg/m³ ​Refractive Index 1.56 (C=10, H₂O) Key Applications & Pharmacological Properties Synthesis & Production Quality Control & Safety ​Parameter ​Specifications ​Purity ≥98% (HPLC) ​Impurities ≤0.5% total organic impurities ​Heavy Metals ≤10 ppm (Pb, Cd, Hg) ​Toxicity – ​LD₅₀ (mouse): >5000 mg/kg (oral)– ​Acute Toxicity: Low in mammals ​Handling Precautions Wear gloves/face shields; avoid inhalation. Store under inert atmosphere. Regulatory Status Research & Development For detailed toxicology data or synthesis protocols, consult regulatory databases (e.g., FDA, EMA) or specialized pharmacological references.