(3b)-4,4-Dimethyl-cholesta-5,7-dien-3-ol CAS 53296-71-2
| CAS No. | 53296-71-2 |
| Molecular Formula | C29H48O |
| Molecular Weight | 412.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3b)-4,4-Dimethyl-cholesta-5,7-dien-3-ol (CAS 53296-71-2), molecular formula C29H48O and molecular weight 412.69 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, a hydroxyl group, an ether linkage, (3b)-4,4-Dimethyl-cholesta-5,7-dien-3-ol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 412.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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.
Physical & Chemical Properties
| Molecular Formula | C29H48O |
| Molecular Weight | 412.69 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related b Standards
- 4,4-Dimethyl-5a-cholesta-8,14-dien-3b-ol (CAS 19456-83-8)
- 2,6-Dimethyl-4-(3-(4-pentylcyclohexyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-6-yl)phenol (CAS 860611-17-2)
- 2,2-Dimethyl-2,3-dihydrobenzofuran-7-yl N,N-dibutylsulfamoyl(methyl)carbamate (CAS 73315-64-7)
- 1-((1'-Benzyl-4',5'-dimethyl-1'H-[1,2'-bipyrrol]-3'-yl)methyl)-3-(p-tolyl)urea (CAS 478077-25-7)
- 5,5-Dimethyl-3-oxo-2-((phenylsulfonyl)methyl)cyclohex-1-en-1-yl 4-methylbenzoate (CAS 339098-54-3)
- 2,2'-Dimethyl-[1,1'-bianthracene]-9,9'(10H,10'H)-dione (CAS 3438-08-2)
- 4,4'-Dimethyl-[1,1'-bianthracene]-9,9'(10H,10'H)-dione (CAS 24541-19-3)
- 4,4'-((3,3'-Dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azanediyl))bis(4-oxobutanoic acid) (CAS 293761-41-8)
Recommended Standards
- 2-Phenyl-[1,2,4]triazolo[1,5-a]pyridine (CAS 779-24-8)
- 2-Hydroxytetracosanoic acid ethyl ester (CAS 124111-47-3)
- 4-(4-Bromophenyl)-2-(4-chlorophenyl)thiomorpholine-3,5-dione 1-oxide (CAS 252027-13-7)
- Stigmast-4-en-3-one (CAS 1058-61-3)
- 104055-76-7 C36H56O9 Quinovic acid 3-O-alpha-L-rhamnopyranoside W2609 (CAS 104055-76-7)
- 1,1,1-Trichloro-2-methyl-2-propanol hemihydrate (CAS 6001-64-5)
- (Octahydro-2h-quinolizin-1-yl)methanamine (CAS 22342-32-1)
- 6-(Difluoromethyl)-4-hydroxy-3-iodopicolinonitrile (CAS 1806877-23-5)
- 1-Cyclooctylethan-1-one (CAS 6713-50-4)
- 3-Chloro-2-ethoxy-5-fluorobenzaldehyde (CAS 883521-72-0)
- tert-Butyl 4-bromo-1H-pyrazolo[3,4-b]pyridine-1-carboxylate (CAS 1286754-61-7)
- ecraprost (CAS 136892-64-3)
- potassium 4-(4-fluorophenyl)-2-oxobut-3-enoate (CAS 118010-89-2)
- Angiotensin III Antipeptide (CAS 133605-55-7)
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