Astaxanthin

Thiamphenicol is a broad‑spectrum antibiotic active ingredient with potent inhibitory effects against both Gram‑negative and Gram‑positive bacteria. It is widely used in the prevention and treatment of respiratory and digestive tract infections in livestock and poultry, as well as bacterial diseases in aqu...

Zeaxanthin is an isomer of lutein and is the most common carotenoid alcohol found in nature. It is the source of color in chili, corn, saffron, and many other plants.

β-Carotene belongs to the carotenoid family. It is a ubiquitous and most stable natural pigment, an orange-yellow, fat-soluble compound that appears as a lustrous, orthorhombic hexahedral or crystalline powder. It is primarily derived from green plants and yellow or orange-yellow fruits and other natural f...

25‑Hydroxyvitamin D₃ is the major circulating metabolite of vitamin D₃, produced in the liver, and is widely used in animal nutrition as a highly bioavailable source of vitamin D activity to support calcium metabolism, bone health, and overall performance in livestock and poultry.

5-Fluoro-L-tryptophan is a colorless crystalline solid with chemical stability. It is soluble in water but insoluble in organic solvents.

7-Methyl-L-tryptophan is an organic compound that is a crystalline white solid. As a key precursor in the biosynthesis of nonribosomal peptide antibiotics, it participates in the synthesis of potent antibacterial agents and their analogues, and has application value in the field of anti‑infective research.

Canthaxanthin is a natural or synthetic orange-red carotenoid pigment. It is widely found in mushrooms, algae, crustaceans (such as shrimp and crab), and fish in nature.

Key intermediate for Florfenicol

Animal-specific antibacterial drugs for sensitive bacteria caused by pigs, chickens and fish bacterial diseases, especially for respiratory infections and intestinal infections.

3-(1-Naphthyl)-L-alanine is an alanine derivative.

CAS No.: 55516-54-6


molecular formula: C13H13NO2


molecular weight: 215.25

L-3-Pyridylalanine is an alanine derivative.

CAS No.: 64090-98-8

molecular formula: C8H10N2O2

molecular weight: 166.18

L‑BASE is a high‑purity chiral intermediate developed and manufactured by Leadsynbio using proprietary enzymatic catalysis technology, serving as a key building block for the synthesis of active pharmaceutical ingredients and nutritional compounds.