PHR1406

Urea

Pharmaceutical Secondary Standard; Certified Reference Material

• Synonym(s): Urea, Carbamide, Carbonyldiamide
• Linear Formula: NH₂CONH₂
• CAS Number: 57-13-6
• Molecular Weight: 60.06
• Beilstein/REAXYS Number: 635724
• EC Number: 200-315-5
• MDL number: MFCD00008022
• UNSPSC Code: 41116107
• NACRES: NA.24

Properties

• grade: certified reference material; pharmaceutical secondary standard
• Quality Level: 300
• agency: traceable to BP 350; traceable to Ph. Eur. U0600000; traceable to USP 1706698
• API family: urea
• CofA: current certificate can be downloaded
• technique(s): HPLC: suitable; gas chromatography (GC): suitable
• mp: 132-135 °C (lit.)
• density: 1.335 g/mL at 25 °C (lit.)
• application(s): pharmaceutical (small molecule)
• format: neat
• storage temp.: 2-30°C
• SMILES string: NC(N)=O
• InChI: 1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)
• InChI key: XSQUKJJJFZCRTK-UHFFFAOYSA-N

Description

General description

Certified pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to pharmacopeia primary standards

Application

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.

Used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

Footnote

To see an example of a Certificate of Analysis for this material enter LRAC1664 in the slot below. This is an example certificate only and may not be the lot that you receive.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable