Estradiol 17-O-Octadecanoate CAS 82205-00-3
| CAS No. | 82205-00-3 |
| Molecular Formula | C36H58O3 |
| Molecular Weight | 538.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Estradiol 17-O-Octadecanoate (CAS 82205-00-3), molecular formula C36H58O3 and molecular weight 538.84 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Estradiol 17-O-Octadecanoate (C36H58O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 538.84 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C36H58O3 |
| Molecular Weight | 538.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
Related Estradiol Standards
- Estradiol 17-O-Octadecanoate-1-14CDISCONTINUED (CAS 210241-63-7)
- Estradiol Dicypionate (CAS 633-36-3)
- Estradiol 17-Palmitate (CAS 5776-45-4)
- Estradiol 3,17-Dienanthate (CAS 7732-97-0)
- 17β-Estradiol 17-(2,3,4-Tri-O-acetyl-β-D-glucuronide Methyl Ester) (CAS 14364-66-0)
- Estradiol Benzoate EP Impurity C (CAS 4147-13-1)
- β-Estradiol 17-(β-D-glucuronide) sodium salt (CAS CATO-C3D-1941)
- Estradiol Impurity 36 (CAS 1359847-39-4)
Recommended Standards
- (2S)-3,3-Dimethyl-2-[[(1R,2R)-2-(2-methyl-5-phenyl-1-pyrrolyl)cyclohexyl]thioureido]-N,N-bis(2-isobutyl)butanamide (CAS 764650-97-7)
- Vitamin A impurity 27 (CAS 62702-53-8)
- 3-((4-Chloro-2-phosphonophenyl)diazenyl)-4,5-dihydroxynaphthalene-2,7-disulfonic acid (CAS 1938-82-5)
- 6(R)-[2-(8(S)-(2,2-Dimethyl-d6-butyryl)oxy]-2(S),6(R)-dimethyl-1,2,6,7,8,8a(R)-hexahydro-1(S)-naphthyl]ethyl-4(R)-(t-butyl-dimethylsilyl)oxy-3,4,5,6-tetrahydro-2H-pyran-2-one (CAS 1335460-29-1)
- Eplivanserin Hemifumarate (CAS 130580-02-8)
- 1-[3-Fluoro-5-(trifluoromethyl)phenyl]-3-(1-methyl-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-3-yl)urea (CAS 1796893-54-3)
- (6-Bromo-3-butoxy-2-fluorophenyl)boronic acid (CAS 1072951-88-2)
- (S)-2-amino-N-(2-fluorophenyl)propanamide hydrochloride (CAS 1266686-21-8)
- N-(3-Chloro-2-methylphenyl)-2-[4-(5-methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]acetamide (CAS 1775345-32-8)
- Tris[2-(1H-pyrazol-1-yl)phenyl]cobalt (CAS 62572-61-6)
- Topiroxostat Impurity 62 (CAS CATO-C4X-105562)
- 2’,3’-dihydro-1’H-spiro[cyclopropane-1,4’-quinoline] (CAS 1304598-29-5)
- (S)-2-([1,1'-Biphenyl]-2-yl)-2-aminoacetic acid (CAS 1228569-15-0)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
Why CATO?
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