186319-97-1 OB4VR2PM24 E-1010 UNII-OB4VR2PM24 1-Azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 6-((1R)-1-hydroxyethyl)-3-(((3S,5S)-5-((R)-hydroxy(3R)-3-pyrrolidinylmethyl)-3-pyrrolidinyl)thio)-4-methyl-7-oxo-, hydrochloride (1:1), (4R,5S,6S)- ER-35786 CAS 186319-97-1
| CAS No. | 186319-97-1 |
| Molecular Formula | C19H29N3O5S |
| Molecular Weight | N/A |
| 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.
186319-97-1 OB4VR2PM24 E-1010 UNII-OB4VR2PM24 1-Azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 6-((1R)-1-hydroxyethyl)-3-(((3S,5S)-5-((R)-hydroxy(3R)-3-pyrrolidinylmethyl)-3-pyrrolidinyl)thio)-4-methyl-7-oxo-, hydrochloride (1:1), (4R,5S,6S)- ER-35786 (CAS 186319-97-1), molecular formula C19H29N3O5SHCl and molecular weight 447.97 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 186319-97-1 OB4VR2PM24 E-1010 UNII-OB4VR2PM24 1-Azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 6-((1R)-1-hydroxyethyl)-3-(((3S,5S)-5-((R)-hydroxy(3R)-3-pyrrolidinylmethyl)-3-pyrrolidinyl)thio)-4-methyl-7-oxo-, hydrochloride (1:1), (4R,5S,6S)- ER-35786 (C19H29N3O5SHCl) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C19H29N3O5S HCl |
| Molecular Weight | 447.97 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
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- RIPGBM (CAS 355406-76-7)
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- 2-(4-Chlorophenyl)-6-(pentafluoro-λ6-sulfanyl)-1H-indole (CAS 1394319-73-3)
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- Potassium pentachlororuthenate(III) (CAS 38386-99-1)
- N-[4-Chloro-2-hydroxy-3-[(piperazin-1-yl)sulfonyl]phenyl]-N'-(2-chloro-3-fluorophenyl)urea p-toluene (CAS 960495-43-6)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
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