Cynor Laboratories

2,4-Dichloroquinazoline (CAS number 607-68-1) is a chemical compound with the molecular formula C₈H₄Cl₂N₂. It is primarily used as a chemical intermediate in the synthesis of other compounds, including certain pesticides and pharmaceuticals. It is known to be irritating to the skin, eyes, and respiratory tract, and may also be acutely toxic. 

3-Aminocrotononitrile is a raw material used in the synthesis of certain Disperse Cyanine Blue dyes. It is not a direct raw material for the Active Pharmaceutical Ingredient (API) Teneligliptin itself, but rather an industrial chemical intermediate used in separate manufacturing processes for other products. 

Metanilic acid (3-aminobenzenesulfonic acid) is a crucial organic compound, appearing as a white/grey crystalline solid, vital for making azo dyes, pharmaceuticals, and analytical reagents due to its benzene ring with both amino (−NH2negative NH sub 2−NH2) and sulfonic acid (−SO3Hnegative SO sub 3 H−SO3H) groups, acting as a versatile building block in chemical synthesis. It's water-soluble, stable, and known as an isomer of sulfanilic acid, prized for creating vibrant, water-soluble colors and used in biosensors and food chemistry.