$4135.00 - $12406.00
Ampicillin EP Impurity G is the diketopiperazine (3R,6R)-3,6-diphenylpiperazine-2,5-dione, CAS 31485-02-6. It is an ampicillin-related analytical impurity, not a peptide-synthesis building block.
This SKU should be moved or cross-listed under Impurity Analysis & Bioactivity Research so customers searching by pharmacopoeial impurity intent reach the correct product family.
Product Information
| Product Name | Ampicillin EP Impurity G |
| Catalog No. | AS4096 |
| CAS No. | 31485-02-6 |
| Molecular Formula | C16H14N2O2 |
| Molecular Weight | 266.30 g/mol |
| Building Block Type | Ampicillin-related diketopiperazine impurity |
| Primary Applications | Pharmaceutical impurity identification; HPLC/LC-MS method development; system suitability; analytical research |
Diketopiperazine Identity
The molecule is a cyclic dipeptide-like 2,5-diketopiperazine containing two phenyl substituents. Its analytical role is tied to ampicillin impurity testing rather than peptide assembly.
Application in Impurity Analysis
Typical use cases include chromatographic method development, impurity peak identification, retention-time comparison, and system-suitability work. The required grade depends on whether the material is used qualitatively or quantitatively.
CRM Status Must Be Lot-Specific
Some major vendors offer CAS 31485-02-6 as a certified reference material. That does not make every commercial lot a CRM. Alan Scientific should only use CRM language when its own lot certificate provides certified content and traceability.
Procurement and QC
Confirm CAS 31485-02-6, formula C16H14N2O2, MW 266.30 g/mol, and the (3R,6R) identity. For regulated analytical work, request the exact lot certificate before use.
Procurement and QC Considerations
Analytical buyers should specify whether the material is needed for qualitative identification, method development, or quantitative calibration because documentation requirements differ.
Product Documents
A Safety Data Sheet (SDS / MSDS) is available for this product to support laboratory handling, storage and safety assessment.
Frequently Asked Questions
Is Ampicillin EP Impurity G a peptide building block?
No. It is an ampicillin-related analytical impurity with a diketopiperazine structure.
What is its chemical identity?
It is (3R,6R)-3,6-diphenylpiperazine-2,5-dione.
Is it a CRM?
Only if the specific Alan Scientific lot is accompanied by certification that establishes assigned value and traceability.