![Molecular structure of (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one (CAS 143140-06-1)](/images/chem_structures_svg/210/143140-06-1.svg)
(3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one
Also known as: (3S-cis)-(+)-2,3-dihydro-7a-methyl-3-phenylpyrrolo[2,1-b]oxazol-5(7aH)-one, (3S-cis)-2,3-dihydro-7a-methyl-3-phenylpyrrolo[2,1-b]oxazol-5(7aH)-one, MFCD00274331
(3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one (CAS 143140-06-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C13H13NO2 and a molecular weight of 215.24800 g/mol. Key properties include a melting point of 88-92ºC, a boiling point of 410ºC at 760mmHg, a density of 1.25g/cm3 and a flash point of 201.7ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 143140-06-1
- Jingsj CID
- J-1992367-2
- Molecular Formula
- C13H13NO2
- Molecular Weight
- 215.24800 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 88-92ºC |
|---|---|
| Boiling Point | 410ºC at 760mmHg |
| Density | 1.25g/cm3 |
| Flash Point | 201.7ºC |
| Exact Mass | 215.09500 |
| PSA | 29.54000 |
| LogP | 1.81040 |
| Vapor Pressure | 6.24E-07mmHg at 25°C |
| Refractive Index | 1.624 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
Frequently Asked Questions
What is the CAS number of (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one?
The CAS number of (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one is 143140-06-1.
What are the molecular formula and molecular weight of (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one?
(3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one has molecular formula C13H13NO2 and molecular weight 215.24800 g/mol.
Is (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one hazardous?
(3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one?
For (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one, Upstream Products: (S)-(+)-2-Phenylglycinol, Levulinic acid, (3R,7aS)-7a-methyl-3-phenyltetrahydropyrrolo[2,1-b]oxazol-5(6H)-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one (CAS 143140-06-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992367-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.