Levothyroxine Impurity 4 CAS 910907-23-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 910907-23-2 |
| Molecular Formula | C21H20I3NO10 |
| Molecular Weight | 827.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Levothyroxine Impurity 4 (CAS 910907-23-2) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C21H20I3NO10. Molecular weight: 827.10 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C21H20I3NO10 |
| Molecular Weight | 827.10 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Levothyroxine Standards
- Levothyroxine N-Acetyl Impurity (CAS 26041-51-0)
- Levothyroxine Impurity N90 (CAS 30804-52-5)
- Levothyroxine Ethyl Ester (CAS 76353-71-4)
- Levothyroxine Impurity 27 (CAS 671235-41-9)
- Levothyroxine sulfate (CAS 77074-49-8)
- Levothyroxine Impurity 30 (CAS 107849-54-7)
- Levothyroxine impurity 47 (CAS CATO-C4X-167847)
- Levothyroxine Methyl Ester (CAS 32180-11-3)
Recommended Standards
- 3,3',5-Triiodo-L-thyronine 4'-O-β-D-glucuronide, 98% (CAS 29919-72-0)
- Biotin-PEG4-amino-t-Bu-DADPS-C3-alykne (CAS 2241685-22-1)
- Ginsenoside Rs3 (CAS 194861-70-6)
- 4-((4-Chloro-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)methyl)morpholine (CAS 721414-43-3)
- 5-benzyl-3a-methyl-6,6a-dihydro-4H-furo[3,4-c]pyrrole-1,3-dione (CAS 885956-67-2)
- 2,3-diamino-1-phenylbutan-1-ol dihydrochloride (CAS 2060020-52-0)
- n-((4-Bromothiophen-2-yl)methyl)cyclohexanamine (CAS 1040045-85-9)
- 2-(4-(Trifluoromethyl)pyridin-2-yl)acetic acid (CAS 1000515-78-5)
- n-Allyl-2-(2-imino-2,3-dihydrothiazol-4-yl)acetamide (CAS 1019108-38-3)
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
Why CATO?
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