PSB 36 CAS 524944-72-7
| CAS No. | 524944-72-7 |
| Molecular Formula | C21H30N4O3 |
| Molecular Weight | 386.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
PSB 36 (CAS 524944-72-7), molecular formula C21H30N4O3 and molecular weight 386.49 g/mol, is a CATO reference standard with documented purity and traceability.
PSB 36 (C21H30N4O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures PSB 36 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H30N4O3 |
| Molecular Weight | 386.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 4 |
Recommended Standards
- N1,N1,N4-tribenzylsuccinamide (CAS 329079-63-2)
- Eltrombopag Impurity 69 (CAS CATO-C4X-119869)
- N-(4-(2,5-Dimethoxyphenyl)thiazol-2-yl)-5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxamide (CAS 854135-46-9)
- Tamoxifen impurity 19 (CAS CATO-C4X-123319)
- 2-Oxa-5,8-diazaspiro[3.5]nonane (CAS 1363382-90-4)
- (7-Amino-4-methyl-1H-indol-2-yl)methanol (CAS 1352901-13-3)
- D-Sphingosine (HCl salt) (CAS 2673-72-5)
- 1-(5-Fluorobenzofuran-2-yl)-2-methylpropan-1-amine (CAS 1477705-49-9)
- 5-ethyl-6-oxo-1H-pyridazine-3-carboxylic acid (CAS 1294451-76-5)
- 1-(4-Chlorophenyl)pyrazole-4-carboxylic Acid (CAS 138907-80-9)
- Ethyl cyclopentanecarboxylate (CAS 5453-85-0)
- Ciprofloxacin Lactate (CAS 97867-33-9)
- A7002E7T2Z 3737-33-5 Etymemazine hydrochloride 10-(3-(Dimethylamino)-2-methylpropyl)-2-ethylphenothiazine hydrochloride 2-Ethyl-N,N,beta-trimethyl-10H-phenothiazine-10-propylamine monohydrochloride Phenothiazine, 10-(3-(dimethylamino)-2-methylpropyl)-2-ethyl-, monohydrochloride 10H-Phenothiazine-10-propanamine, 2-ethyl-N,N,beta-trimethyl-, monohydrochloride (9CI) EINECS 223-111-8 2-Ethyl-10-(3-dimethylamino-2-methylpropyl)phenothiazine hydrochloride Ethylisobutrazine hydrochloride Ethymemazine monohydrochloride Nuital Sergetyl RP 6484 Etymemazine HCl UNII-A7002E7T2Z (CAS 3737-33-5)
- D-β-Asp15-Tirzepatide (CAS CATO-CPTD788930)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com