Impurity reference standards
Ascorbic acid impurity standards
Zemixal lists 93 reference materials related to Ascorbic acid, covering the drug substance itself, its process impurities and the products it forms on storage. Among them are 4 pharmacopoeial impurities, 4 metabolites or hydroxylated analogues and 1 degradation product.
93reference materials
4pharmacopoeial
4metabolites
1degradants
Each lot ships with a certificate of analysis, and characterisation data such as 1H-NMR, mass spectrum and HPLC purity can be shared before you order. Typical uses are method development and validation, relative response factor work, forced degradation studies and the impurity sections of ANDA, DMF or CEP filings.
By impurity type
Pharmacopoeial4EP, USP, BP or JP named impurities
Metabolites4Hydroxy, desmethyl and conjugated forms
Degradants1N-oxides, dimers, lactones and breakdown products
Counts are based on product names. One compound can fall into more than one type.
All Ascorbic acid reference materials
1–60 of 93 standards
(Z)-2-(2-Tritylaminothiazol-4-yl)-2-methoxyiminoacetic Acid Methyl Ester
- CAS
- 1331643-44-7
- Formula
- C26H23N3O3S
- MW
- 457.5 g/mol
ZX-043443
2-(2-(Azidomethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
- CAS
- 1223598-41-1
- Formula
- C13H18BN3O2
- MW
- 259.11 g/mol
ZX-043572
2-(4-Acetamido-3-((4-chlorophenyl)thio)-2-methyl-1H-indol-1-yl)acetic acid
- CAS
- 802904-66-1
- Formula
- C19H17ClN2O3S
- MW
- 388.9 g/mol
ZX-043566
2-Methoxy-2-(5-methoxy-2-nitrophenoxy)-acetic Acid Methyl Ester
- CAS
- 55544-88-2
- Formula
- C11H13NO7
- MW
- 271.22 g/mol
ZX-043521
3-(Methylmaleimido)propionic Acid N-Succinimidyl Ester
- CAS
- 1346601-58-8
- Formula
- C12H12N2O6
- MW
- 280.23 g/mol
ZX-043523
3-Hydroxypropanal (1M solution in water)(Sold on a solution basis)
- CAS
- 2134-29-4
- Formula
- C3H6O2
- MW
- 74.08 g/mol
ZX-043445
Questions
Ascorbic acid impurities, answered
How many Ascorbic acid impurity standards does Zemixal list?
The catalogue currently lists 93 compounds for Ascorbic acid, including 4 pharmacopoeial impurities, 4 metabolites or hydroxylated analogues and 1 degradation product. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Ascorbic acid impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Ascorbic acid impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.