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By Jignesh Akbari, Director | Published on 23 October 2026 by SNJ Labs Pvt. Ltd.
Procurement teams often search for an API by its CAS number, and for iron sucrose that number is 8047-67-4. But iron sucrose is a complex, not a simple molecule, and the CAS number tells you only part of what you need to know. This article explains the identity of iron sucrose, its common names, how it differs from other intravenous irons and what to specify beyond the CAS number.
For product details, see our iron sucrose CAS 8047-67-4 API page.
| Item | Detail |
|---|---|
| Name | Iron sucrose |
| CAS number | 8047-67-4 |
| Description | Complex of polynuclear iron(III)-hydroxide in sucrose |
| Common synonyms | Iron saccharate, ferric hydroxide sucrose complex, saccharated iron oxide, saccharated ferric oxide, iron sucrose complex |
| Therapeutic use | Intravenous treatment of iron deficiency anaemia, including in chronic kidney disease |
| Forms supplied by SNJ Labs | Powder and concentrate liquid |
For a small molecule, a CAS number points to one exact chemical structure. Iron sucrose is a distribution of complexes of different sizes. Its performance depends on attributes such as molecular weight distribution, iron core size and how tightly the iron is held. These depend on the manufacturing process.
That is why a purchase specification should name the pharmacopoeial or agreed standard and the critical quality attributes, not just the CAS number. Ask suppliers for full specifications and characterisation data. See how to qualify iron sucrose API suppliers.
| Product | How it differs |
|---|---|
| Ferric carboxymaltose | A different IV iron complex with a carbohydrate shell that allows larger single doses |
| Iron sorbitol | An iron complex with sorbitol and citric acid, traditionally given by intramuscular injection |
| Iron dextran | An IV iron with a dextran carbohydrate shell |
| Sucroferric oxyhydroxide | An oral phosphate binder used in dialysis patients, not an iron replacement therapy, with a different identity and use |
Mixing up these names in purchase orders or regulatory documents can cause costly errors, so always confirm the product name, CAS number and intended use together.
Product name, CAS number and form (powder or concentrate liquid)Applicable pharmacopoeia or in-house standard, and whether the product is for injectable useIron content, iron(II) limit and molecular weight distribution limitspH, water or solids content and sucrose contentMicrobial and endotoxin limitsPackaging, storage conditions and retest periodRegulatory documents required, such as DMF letter of authorisation or written confirmationSNJ Labs lists US DMF 30380 for iron sucrose powder and US DMF 34357 for the concentrate liquid, holds written confirmation for exports to the EU and operates a WHO-GMP certified site. We provide documentation support for registration in multiple markets and meet buyers at international events such as CPHI Frankfurt and CPHI China.
Iron sucrose is used where oral iron does not work well, including patients with chronic kidney disease on dialysis or erythropoietin therapy, and others with iron deficiency anaemia who cannot absorb or tolerate oral iron. It treats iron deficiency; it does not treat kidney disease itself.
Note: iron sucrose is a prescription medicine given intravenously under medical supervision. This article is written for pharmaceutical manufacturers and buyers, not as medical advice.
SNJ Labs Pvt. Ltd., established in 2013, manufactures active pharmaceutical ingredients and drug intermediates at a WHO-GMP certified, fully auditable facility in Padavala, Rajkot, Gujarat. Its iron sucrose powder and concentrate liquid APIs are supported by US Drug Master Files and documentation for registration. See our quality systems, manufacturing blocks and global presence.
Q.1. What is the CAS number of iron sucrose?
A: The CAS number of iron sucrose is 8047-67-4.
Q.2. What are the synonyms of iron sucrose?
A: Common synonyms include iron saccharate, ferric hydroxide sucrose complex, saccharated iron oxide, saccharated ferric oxide and iron sucrose complex.
Q.3. Is iron sucrose the same as sucroferric oxyhydroxide?
A: No. Iron sucrose is an intravenous iron replacement therapy, while sucroferric oxyhydroxide is an oral phosphate binder used in dialysis patients. They have different identities and uses.
Q.4. Why isn't the CAS number enough to specify iron sucrose?
A: Iron sucrose is a complex whose properties, such as molecular weight distribution and stability, depend on the manufacturing process. Specifications must cover these quality attributes, not just the CAS number.
Q.5. How is iron sucrose different from ferric carboxymaltose?
A: Both are intravenous iron complexes, but they use different carbohydrate shells and have different dosing characteristics. They are separate products with different specifications.
For domestic enquiries call +91 93289 11673 or email sales@snjlabs.com. For exports call +91 63579 43945 or email marketing@snjlabs.com. You can also send an enquiry or download our catalogue.