1,3,3-Trimethyl-2-methyleneindoline
Also known as: 2-Methylene-1,3,3-trimethylindoline, Fischer's base, Fischer base, Fischers base, 1,3,3-Trimethyl-2-methylidene-2,3-dihydro-1H-indole, 2-Methylene-1,3,3-trimethylindoline, Fischer base, NSC 66176, EINECS 204-235-1, MFCD00005813
1,3,3-Trimethyl-2-methyleneindoline (CAS 118-12-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H15N and a molecular weight of 173.25400 g/mol. Key properties include a melting point of -8 °C, a boiling point of 248 °C(lit.), a density of 0.979 g/mL at 25 °C(lit.) and a flash point of 101.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H400 — Very toxic to aquatic life. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 118-12-7
- Jingsj CID
- J-6453-8
- Molecular Formula
- C12H15N
- Molecular Weight
- 173.25400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -8 °C |
|---|---|
| Boiling Point | 248 °C(lit.) |
| Density | 0.979 g/mL at 25 °C(lit.) |
| Flash Point | 101.7 °C |
| Exact Mass | 173.12000 |
| PSA | 3.24000 |
| LogP | 2.99270 |
| Vapor Pressure | 0.0249mmHg at 25°C |
| Refractive Index | n20/D 1.577(lit.) |
| Additional Property | negligible |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H400 — Very toxic to aquatic life
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,3,3-Trimethyl-2-methyleneindoline?
The CAS number of 1,3,3-Trimethyl-2-methyleneindoline is 118-12-7.
What are the molecular formula and molecular weight of 1,3,3-Trimethyl-2-methyleneindoline?
1,3,3-Trimethyl-2-methyleneindoline has molecular formula C12H15N and molecular weight 173.25400 g/mol.
Is 1,3,3-Trimethyl-2-methyleneindoline hazardous?
1,3,3-Trimethyl-2-methyleneindoline has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H400 — Very toxic to aquatic life.
What are the upstream and downstream products of 1,3,3-Trimethyl-2-methyleneindoline?
For 1,3,3-Trimethyl-2-methyleneindoline, Upstream Products: 1,2,3,3-Tetramethyl-3H-indolium iodide, 1-Methylindole, iodomethane; Downstream Products: iodomethane, 1,3-Bis(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-2-propanone, 1,3,3-Trimethyl-2-(formylmethylene)indoline.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3,3-Trimethyl-2-methyleneindoline (CAS 118-12-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6453-8 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.