CAS of Lubiprostone
- CAS : 136790-76-6,333963-40-9
- Formula:C20H32F2O5
- Molecular Weight: 390.462
- Density :1.2±0.1 g/cm³
- boiling point :532.3±50.0 °C at 760 mmHg
- Flash point:275.7±30.1 °C
- Synonym:Prostan-1-oic acid, 11,15-epoxy-16,16-difluoro-15-hydroxy-9-oxo-, (11alpha,15R)-Spi 0211; Unii-7662kg2R6k; AMitiza Lubiprostone; UR-021; Lubiprostone-d4; Lubiprostone (Ring Closed); Ruby prostaglandin; Lubiprostone hemiketal; Prostan-1-oic acid, 11,15-epoxy-16,16-difluoro-15-hydroxy-9-oxo-, (11α,15R)-Prostaglin Lubiprostone;7-((1R,2S)-2-(4,4-difluoro-3-oxooctyl)-5-oxocyclopent-3-en-1-yl)heptanoic acidAmitiza
Brief Introduction of Lubiprostone
Lubiprostone API is a white or almost white crystalline powder.
Solubility Information:
Freely soluble in ethanol, almost insoluble in hexane and water.
Ethanol: 72 mg/mL (184.4 mM), sonication is recommended.
DMSO: 70 mg/mL (179.28 mM), sonication is recommended.
H₂O: < 1 mg/mL (insoluble or slightly soluble).
Storage: -20°C, sealed and dry, protected from light and moisture.
Transportation: 2-8°C, transport with ice packs.
Shelf Life: Powder: -20°C for 3 years
In solvent: -80°C for 1 year

Lubiprostone Mechanism of Action
Lubiprostone is a localized chloride channel activator that selectively activates type 2 chloride channels (CIC-2) located on the luminal cell membrane of the gastrointestinal epithelium. This increases intestinal fluid content, softens stool, promotes intestinal motility, and alleviates the symptoms of chronic idiopathic constipation without altering plasma sodium and potassium concentrations.

Advantages of Lubiprostone


Lubiprostone primarily acts locally in the intestine and is poorly absorbed systemically. Clinically, it is widely used to treat chronic constipation and irritable bowel syndrome.
Compared with other laxatives, it not only has a good therapeutic effect on constipation but also has a low incidence of drug resistance with long-term use and the advantage of a smaller dosage.
Highassay provides lubiprostone pharmaceutical raw material. Lubiprostone API is a white or almost white crystalline powder. Its quality meets pharmacopoeia standards such as USP/EP. Its purity exceeds 99%. Highassay is already commercially producing lubiprostone, offering high production volumes, competitive pricing, and long-term inventory. Please feel free to contact us for inquiries.
As a chloride channel activator, lubiprostone activates type 2 chloride channels (CIC-2) located on the luminal cell membrane of the gastrointestinal epithelium, increasing intestinal fluid content, softening stool, and promoting intestinal motility, alleviating constipation.
It is primarily used to treat constipation.
Delivery time is generally one week, using express delivery, such as FedEx.
Highassay maintains stable production of lubiprostone and maintains a large inventory.
Bulk purchases do offer discounts, but the discount varies depending on the quantity. Please contact our sales department for details.
Specification of Lubiprostone
Items | Standards | Results |
Appearance | White or almost white crystalline powder | Conforms |
Identification | IR | Conforms |
Water | 1.0% max | 0.08% |
Specific rotation (c=1 in acetonitrile) | -42.0° ~ -48.0° | -46.8 ° |
Related substance | Any single impurity: 0.10% max Total impurities: 0.50% max | N.D N.D |
Residual solvents | Ethyl acetate: 0.5% max n-Hexane: 0.029% max | 0.07% N.D |
Assay (HPLC) Anhydrous and solvents free basis | 96.0-102.0% | 99.9% |