4,4',4''-Trimethoxytrityl chloride
Also known as: Trimethoxytrityl chloride, Tris(4-methoxyphenyl)methyl chloride, Chlorotris(4-methoxyphenyl)methane, 4,4',4''-Trimethoxytriphenylmethyl chloride, 1,1',1''-(chloromethylidyne)tris[4-methoxybenzene], MMTr-Cl
4,4',4''-Trimethoxytrityl chloride (CAS 49757-42-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C22H21ClO3 and a molecular weight of 368.85300 g/mol. Key properties include a melting point of 146-148ºC(lit.), a boiling point of 497.8ºC at 760 mmHg, a density of 1.166g/cm3 and a flash point of 160.7ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 49757-42-8
- Jingsj CID
- J-30844-1
- Molecular Formula
- C22H21ClO3
- Molecular Weight
- 368.85300 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 146-148ºC(lit.) |
|---|---|
| Boiling Point | 497.8ºC at 760 mmHg |
| Density | 1.166g/cm3 |
| Flash Point | 160.7ºC |
| Exact Mass | 368.11800 |
| PSA | 27.69000 |
| LogP | 5.24310 |
| Refractive Index | 1.574 |
| Additional Property | Insuluble (1.4E-3 g/L) (25 ºC) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2909309090 |
|---|---|
| Summary | 2909309090 other aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4,4',4''-Trimethoxytrityl chloride?
The CAS number of 4,4',4''-Trimethoxytrityl chloride is 49757-42-8.
What are the molecular formula and molecular weight of 4,4',4''-Trimethoxytrityl chloride?
4,4',4''-Trimethoxytrityl chloride has molecular formula C22H21ClO3 and molecular weight 368.85300 g/mol.
Is 4,4',4''-Trimethoxytrityl chloride hazardous?
4,4',4''-Trimethoxytrityl chloride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 4,4',4''-Trimethoxytrityl chloride?
For 4,4',4''-Trimethoxytrityl chloride, Upstream Products: Tris(4-methoxyphenyl)methanol, 4-Bromoanisole, 4,4'-Dimethoxybenzophenone; Downstream Products: Tris(4-methoxyphenyl)methanol, 4,4'-Dimethoxybiphenyl.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,4',4''-Trimethoxytrityl chloride (CAS 49757-42-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30844-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.