
Pharmaceutical-grade Captopril (CAS 62571-86-2), min. 98.5% HPLC, supplied wholesale by Zyntex to licensed pharmaceutical producers. ACE inhibitor API for oral tablets and combination products. CoA and SDS with every lot.
Captopril (C9H15NO3S) is a white to off-white crystalline powder with a faint sulfur-like odor. It dissolves freely in water and alcohol. Its molecule contains a free thiol (SH) group, which is responsible for the odor and makes it sensitive to oxidation into a disulfide impurity, so moisture and heat protection matter during storage.
Pharmaceutical companies use it in tablets in the ACE inhibitor class. It is the parent compound of the class that also includes Enalapril Maleate and Lisinopril, which do not contain a thiol group. Related cardiovascular APIs include angiotensin receptor blockers such as Losartan potassium and Valsartan.
Zyntex supplies it from qualified API producers with lot-specific documentation, only to companies licensed for pharmaceutical use.
Main application areas:
💊 Oral Tablets
API for tablets in the ACE inhibitor class.
🔗 Combination Products
Used with diuretics in combination tablets.
🔬 Generic Development
Development and reference material.
🧪 Analytical Use
Reference material for quality control.
| Parameter | Standard Value |
|---|---|
| Product Name | Captopril |
| CAS Number | 62571-86-2 |
| Molecular Formula / Weight | C9H15NO3S / 217.29 g/mol |
| Assay / Purity (HPLC) | Min 98.5% |
| Appearance | White to off-white crystalline powder with a faint sulfur-like odor |
| Melting Range | Approx. 104 – 110 °C |
| Solubility | Freely soluble in water, alcohol, and chloroform |
| Documents | CoA and SDS with every lot |
⚠️ Safety & Handling: Pharmacologically active substance that may damage the unborn child. Avoid inhalation of dust and contact with skin and eyes; wear gloves, eye protection and dust protection. Store in tightly closed containers in a cool, dry place, protected from moisture. Always consult the Safety Data Sheet (SDS) for full classification and handling instructions.
Why does captopril have a sulfur odor?
Its molecule contains a thiol group, which gives a faint sulfur-like odor. A strong odor can indicate degradation, so proper storage is important.
Who can purchase this API?
It is supplied only to pharmaceutical companies holding the licenses required for API purchase and use in their country.
How can I get a price and documents?
Prices depend on quantity, packaging and destination. Contact us with your required volume to receive a quotation together with the CoA and SDS.