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$25
10-199 Kilogram
$18
200-499 Kilogram
$14
≥500 Kilogram
Product Description
Carbaspirin calcium is a pharmaceutical active ingredient consisting of an equimolecular compound of calcium bis(2-acetyloxybenzoate) and urea. It is used in pharmaceutical formulations as a salicylate active, with procurement focused on pharmacopeial assay, related substances, water, sodium, identity, and moisture-protective packaging requirements.
Also known as carbasalate calcium, carbaspirin calcium is classified as a salicylate and is associated with analgesic, antipyretic, anti-inflammatory, and antiplatelet pharmaceutical applications. The compound is freely soluble in water and should be protected from moisture during handling. :contentReference[oaicite:0]{index=0}
Carbaspirin calcium is the calcium salt complex of acetylsalicylic acid and urea. Its chemical identity is represented by the molecular formula C19H18CaN2O9 and a molecular weight of approximately 458.4 g/mol. It is listed under the names carbaspirin calcium and carbasalate calcium, with CAS number 5749-67-7. :contentReference[oaicite:1]{index=1}
The European Pharmacopoeia monograph identifies the substance as an equimolecular compound of calcium bis[2-(acetyloxy)benzoate] and urea and specifies a content of 99.0% to 101.0% on an anhydrous basis. :contentReference[oaicite:2]{index=2}
| Item | Specification |
|---|---|
| Product Name | Carbaspirin Calcium |
| Synonyms | Carbasalate Calcium; Calcium Acetylsalicylate Carbamide |
| Category | Pharmaceutical API |
| CAS Number | 5749-67-7 |
| Molecular Formula | C19H18CaN2O9 |
| Molecular Weight | 458.4 g/mol |
| Composition | Equimolecular compound of calcium bis(2-acetyloxybenzoate) and urea |
| Appearance | White or almost white crystalline powder |
| Assay / Content | 99.0%–101.0% on an anhydrous basis according to the referenced Ph. Eur./BP monograph |
| Identification | Infrared absorption spectrophotometry, UV-visible spectrophotometry, salicylate reaction, and calcium reaction according to the applicable monograph |
| Related Substances | Controlled according to the applicable pharmacopoeial specification |
| Water | Not more than 0.1% according to the referenced Ph. Eur./BP monograph |
| Sodium | Not more than 0.1% according to the referenced Ph. Eur./BP monograph |
| Heavy Metals | Not more than 10 ppm according to the referenced specification |
| Solubility | Freely soluble in water and dimethylformamide; practically insoluble in acetone and anhydrous methanol |
| Standard Test Methods | Pharmacopeial titration, HPLC or chromatographic impurity testing, UV-visible spectrophotometry, IR identification, and applicable physicochemical tests |
| Common Grade | Pharmaceutical API / pharmacopeial grade; custom specifications available according to applicable requirements |
| Shelf Life | Common industry practice is up to 24 months when stored in sealed original packaging under recommended conditions; exact expiry or retest period is batch- and specification-dependent |
| Storage | Store in an airtight container in a cool, dry place and protect from moisture |
| Packaging | Common bulk formats include sealed inner bags with 1 kg or 5 kg quantities and fiber drums around 25 kg; customized packaging is available |
| Particle Size | Customizable according to formulation and processing requirements |
| MOQ | Bulk quantities supported; minimum order requirements vary by packaging and specification |
Carbaspirin calcium is a salicylate pharmaceutical active ingredient associated with analgesic, antipyretic, anti-inflammatory, and antiplatelet applications. It is classified in the ATC system under both platelet aggregation inhibitors and salicylic acid derivatives. :contentReference[oaicite:3]{index=3}
For commercial formulation projects, the final indication, dosage form, dose, labeling, and market claims must be established according to the applicable pharmaceutical regulatory requirements. The API should be evaluated against the specification and pharmacopoeial standard relevant to the intended market.
For carbaspirin calcium, the most important sourcing distinction is the assay basis. The referenced pharmacopoeial specification expresses content on an anhydrous basis at 99.0%–101.0%, while water is separately controlled at a maximum of 0.1%. Buyers should therefore compare assay results together with the water result and the stated calculation basis rather than treating assay as an isolated percentage. :contentReference[oaicite:4]{index=4}
| Procurement Parameter | What to Review | Why It Matters |
|---|---|---|
| Assay / content | 99.0%–101.0% anhydrous-basis requirement and the laboratory calculation basis | Ensures the reported content is interpreted consistently with the applicable pharmacopeial specification. |
| Water | Individual batch result and applicable limit | The material must be protected from moisture, and water is separately controlled in the monograph. |
| Related substances | Chromatographic or monograph-specific impurity results | Provides information beyond total assay and helps assess chemical purity. |
| Identification | IR, UV-visible, salicylate, and calcium identification requirements | Provides orthogonal evidence that the supplied material matches the intended chemical identity. |
This approach is particularly useful when comparing two API lots or suppliers. A procurement review should consider the complete analytical profile, including assay basis, water, related substances, identity, and packaging integrity, rather than selecting material solely by a headline purity number.
Carbaspirin calcium should be protected from moisture and stored in an airtight container. Common commercial packaging uses sealed inner bags with protective outer containers, including 1 kg, 5 kg, and approximately 25 kg formats. Packaging configuration, labeling, and documentation can be customized according to procurement requirements.
For qualified pharmaceutical projects, support can extend from bulk API supply to customized packaging, labeling coordination, specification management, and finished-product manufacturing. The appropriate scope depends on the dosage form, target market, regulatory pathway, and technical documentation required for the project.
Carbaspirin calcium should be protected from moisture during handling. The referenced pharmacopoeial monograph specifically notes that examinations in aqueous solutions should be performed immediately after preparation. This makes moisture control, sealed packaging, and appropriate laboratory handling relevant considerations during incoming inspection and formulation development. :contentReference[oaicite:5]{index=5}
Carbaspirin calcium is a defined pharmaceutical API with a molecular weight of approximately 458.4 g/mol and a pharmacopeial content specification of 99.0%–101.0% on an anhydrous basis. For reliable procurement, assay basis, water, related substances, identification, and moisture-protective storage should be evaluated together.
Contact us today to request samples, a COA, technical documents, and a wholesale quotation for carbaspirin calcium.

Packaging & Delivery
| Selling Units: | Kilogram |
|---|
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