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Home > Active Pharmaceutical Ingredients > Diagnostic Agents (Find 58 items)

Diagnostic Agents

Sodium saccharin dihydrate

(6155-57-3)
Saccharin sodium is a commonly used synthetic sweetener. It is not absorbed in the human body and does not generate heat. Can be used for plum and tangerine peel, the maximum use amount is 5.0g/kg, the maximum use amount in melon seeds is 1.2g/kg Chemicalbook; in beverages, wine preparations, ice cream, ice cream, popsicles, pickles, compound seasonings, preserves, cakes, biscuits The maximum use amount in bread is 0.15g/kg; the concentrated juice is added at 80% of the concentration ratio.

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Barium carbonate

(513-77-9)
1. Preparation of barium standard solution. It is used in ceramic glazes, cement, bricks and in rat poison.
2. Preparation of barium standard solutions.

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Sodium saccharin

(128-44-9)
Non-nutritive sweetener. Used as a food sweetener and diagnostic medicine

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Barite

(13462-86-7)
Barite is widely distributed in nature and occurs as the mineral barite (also known as barytes or heavy spar). It often is associated with other metallic ores, such as fluorspar. Barites containing over 94% BaSO4 can be processed economically.
Barite has many commercial applications. It is used as natural barite, or precipitated BaSO4. The precipitated salt in combination with equimolar amount of co-precipitated zinc sulfide formerly was used as a white protective coating pigment, known a

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Sodium diatrizoate

(737-31-5)
Water-soluble contrast agent, commonly used for urography, but also for renal, cardiovascular, cerebrovascular, etc.

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Phenol red

(143-74-8)
Used as an acid-base indicator, the color range of pH: 6.8 (sulfur) -8.4 (red). Also used in biochemical research. Purpose: Acid-base indicator, color change range pH: 6.8 (yellow) -8.4 (red). Full measurement of blood carbon dioxide, preparation of disaccharide iron urea medium indicator in bacterial serum test. Its sodium salt is used to determine liver function. Also used in biochemical research.

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Sodium fluorescein

(518-47-8)
A sodium salt of fluorescein Same as fluorescein.

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Iopromide

(73334-07-3)
Iopromide, also known as Uvixine and Iopramide, is a non-ionic hypotonic contrast agent that was launched in Switzerland in 1986. This product can reduce the adverse reactions caused by high osmotic pressure. The solution is neutral, so it will not affect the charged protein and cell membrane structure, nor will it interfere with the electrolyte balance in the body, so it has little effect on red blood cells, endothelial cells and body fluids. Its advantages are: directly used for angiography, b

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Iopamidol

(60166-93-0)
Iopamidol, also known as iodoisopeptidol, iodopentaol, iopermitol, iopira, iodopydo, and iodomethasone, is a non-ionic water-soluble contrast agent, which is used for imaging diagnostics. Its chemical structure is The amide compound of triiodoisophthalic acid derivative has low toxicity to blood vessel wall and neurotoxicity, good local and systemic tolerance, low osmotic pressure, low viscosity, good contrast, stable injection, and very little deiodination in the body. It is suitable for Myelog

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Iophendylate

(99-79-6)
It is suitable for spinal cord subarachnoid angiography to diagnose spinal cord compression, spinal cord cavity obstruction, spinal cord tumors, spinal arthropathy, intervertebral disc displacement, etc. It can also be used for ventriculography, amnography, lymphangiography. Emulsion injection can be used for fistula angiography and postoperative "T" tube cholangiography.

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Diagnostic agents refer to diagnostic reagents prepared using principles or methods such as immunology, microbiology, and molecular biology, and used in vitro for the diagnosis, detection, and epidemiological investigation of human diseases. Diagnostic agents can be divided into two categories: in vivo diagnostic reagents and in vitro diagnostic reagents. Except for the in vivo diagnostic reagents used for diagnosis, such as old tuberculin, brucellin, and Sickle toxin, most of them are in vitro diagnostic products. "Circulatory System Drugs" on ECHEMI includes organ function test agent, medical imaging drugs, and mainly supplies APIs for such drugs.

Frequently Asked Questions

What are Diagnostic Agents and how are they used in medical imaging?

Diagnostic Agents are pharmaceutical substances used to enhance the visibility of internal structures during medical imaging procedures such as MRI, CT scans, X-rays, and ultrasound. These agents help clinicians detect, diagnose, and monitor diseases by improving contrast in images. Common types include iodinated contrast media for CT, gadolinium-based agents for MRI, and radiopharmaceuticals for nuclear medicine. Their safe and effective use is critical for accurate diagnosis and patient outcomes.

What factors should be considered when selecting a Diagnostic Agent supplier?

When selecting a Diagnostic Agent supplier, consider the following key criteria:1. Regulatory compliance—ensure the supplier meets FDA, EMA, or other relevant authority standards.2. Quality assurance systems, including GMP certification and robust documentation.3. Product portfolio breadth and availability of specialized or niche agents.4. Supply chain reliability and ability to meet demand consistently.5. Technical support and post-sale services, such as stability data and handling guidance.Choosing a reputable supplier ensures product integrity and regulatory safety.

Are there different types of Diagnostic Agents for various imaging modalities?

Yes, Diagnostic Agents are specifically formulated for different imaging modalities. For example:- Iodine-based contrast agents are used in X-ray and CT imaging to highlight blood vessels and organs.- Gadolinium chelates serve as contrast enhancers in MRI scans.- Technetium-99m and other radioisotopes are employed in SPECT and PET scans for functional imaging.- Microbubble agents improve visualization in ultrasound diagnostics.Selecting the correct agent type is essential for image clarity and diagnostic accuracy.

What are the safety considerations when using Diagnostic Agents?

Safety considerations for Diagnostic Agents include assessing patient allergies (especially to iodine or gadolinium), renal function (as some agents are nephrotoxic), and pregnancy status. Adverse reactions—ranging from mild (nausea, rash) to severe (anaphylaxis)—must be monitored. Proper dosing, hydration protocols, and adherence to clinical guidelines minimize risks. Healthcare providers should always review contraindications and follow institutional safety protocols before administration.

How do advancements in Diagnostic Agents improve patient care?

Recent advancements in Diagnostic Agents—such as targeted molecular imaging probes, biodegradable contrast agents, and reduced-toxicity formulations—enhance early disease detection, improve image resolution, and lower side effect risks. Innovations like theranostic agents combine diagnosis and therapy, enabling personalized treatment plans. These developments lead to more precise diagnoses, better monitoring of treatment response, and ultimately, improved patient outcomes across oncology, cardiology, and neurology.

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