Riboflavin EP Impurity C
CAS 2535-20-8
Cat. no. C4X-18193 Formula C13H18N4O6
MW 326.31
In stock
Riboflavin, or vitamin B2, is a light-sensitive vitamin whose impurity profile is controlled during manufacture and stability testing. Riboflavin EP Impurity C carries a European Pharmacopoeia impurity designation in its name, marking it as one of the related substances monitored alongside that drug substance. It is a yellow solid of formula C13H18N4O6 and molecular weight 326.31. Analytical laboratories use it to locate and assign impurity peaks in HPLC methods, to demonstrate resolution and system suitability, and to prepare calibration solutions when the impurity is measured against an external reference. Its colour and solubility behaviour also make it a convenient visual check during method development. Pack sizes listed here range from 0.5 mg to 200 mg. Store at -20 +/- 5 C and ship with ice packs. Request a quotation or the accompanying documentation to evaluate it further.
Also known as
6,7-Dimethyl-8-ribityllumazine; 6,7-dimethyl-8-(1-D-ribityl)lumazine; Russupteridine IV; 6,7-dimethyl-8-(D-ribityl)lumazine; RL-6,7-diMe; 6,7-dimethyl-8-D-ribityllumazine; Riboflavin impurity C; Ribitol, 1-deoxy-1-(3,4-dihydro-6,7-dimethyl-2,4-dioxo-8(2H)-pteridinyl). Further pharmacopoeial and trivial names are recorded on the certificate of analysis.
Pack sizes and lead time
| Pack size | Availability | Quote |
|---|---|---|
| 0.5 mg | In stock | |
| 1 mg | In stock | |
| 3 mg | In stock | |
| 5 mg | In stock | |
| 10 mg | In stock | |
| 20 mg | In stock | |
| 25 mg | In stock | |
| 50 mg | In stock | |
| 55 mg | In stock | |
| 60 mg | In stock | |
| 100 mg | In stock | |
| 200 mg | 49 days |
Content and purity for each pack size are stated per lot on the certificate of
analysis. Prices are quoted per enquiry so that pack size, documentation and shipping requirements
can be confirmed together — no price is published on this site.
What the documents contain
- Certificate of analysis — issued per lot: catalogue and lot number, the value assigned to the material and the analytical basis for it.
- Safety data sheet — supplied for the catalogue item, and the basis for the transport classification used on the shipment.
- Storage and shipping conditions for this item: -20℃±5℃, Shipping with Ice Packs.
Frequently asked questions
Is a certificate of analysis (COA) available for Riboflavin EP Impurity C?
Yes. A batch-specific COA and the MSDS are issued for every lot of Riboflavin EP Impurity C (catalogue number C4X-18193). Use the COA link on this page, or email [email protected] with the lot number printed on your label and we will send the matching document.
What pack sizes and lead times are offered?
Pack sizes 0.5 mg, 1 mg, 3 mg, 5 mg, 10 mg, 20 mg, 25 mg, 50 mg, 55 mg, 60 mg, 100 mg are held in stock and typically ship within 1–2 working days Other sizes (200 mg) are quoted with a lead time of approximately 49 days.
How is the purity of Riboflavin EP Impurity C documented?
Purity is determined per batch and stated on the COA together with the analytical data used for its assignment. If your method requires a specific grade or a particular pharmacopoeial naming, tell us the requirement when you enquire and we will confirm suitability.
Can you supply a larger quantity or a custom synthesis?
Yes. Quantities above the listed pack sizes are quoted on request, and custom synthesis or isolation from related starting materials can be discussed for compounds not held in stock. Contact [email protected] with the target quantity and required delivery date.
How is Riboflavin EP Impurity C shipped?
Shipping conditions for this item: Shipping with Ice Packs. Shipments are packed to maintain the specified storage condition, and the SDS is provided for transport classification.
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