but-3-ynyl 4-methylbenzenesulfonate
Also known as: 3-Butynyl p-toluenesulfonate, 3-Butynyl tosylate, But-3-yn-1-yl 4-methylbenzenesulfonate, p-Toluenesulfonic acid 3-butynyl ester, Homopropargyl tosylate, 4-Tosyloxy-1-butyne, Propargyl-Tos
but-3-ynyl 4-methylbenzenesulfonate (CAS 23418-85-1) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C11H12O3S and a molecular weight of 224.276 g/mol. Key properties include a boiling point of 352.0±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 166.7±23.2 °C. 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.
- 23418-85-1
- Jingsj CID
- J-49215-9
- Molecular Formula
- C11H12O3S
- Molecular Weight
- 224.276 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 352.0±25.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 166.7±23.2 °C |
| Exact Mass | 224.050720 |
| PSA | 51.75000 |
| LogP | 2.01 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.535 |
| Storage Conditions | 4℃ |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | Cleavable |
|---|---|
| Additional Information | [1]. Beck A, et al. Strategies and challenges for the next generation of antibody-drug conjugates. Nat Rev Drug Discov. 2017 May;16(5):315-337. |
Customs & Trade Information
| HS Code | 2905290000 |
|---|---|
| Summary | 2905290000 unsaturated monohydric alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of but-3-ynyl 4-methylbenzenesulfonate?
The CAS number of but-3-ynyl 4-methylbenzenesulfonate is 23418-85-1.
What are the molecular formula and molecular weight of but-3-ynyl 4-methylbenzenesulfonate?
but-3-ynyl 4-methylbenzenesulfonate has molecular formula C11H12O3S and molecular weight 224.276 g/mol.
Is but-3-ynyl 4-methylbenzenesulfonate hazardous?
but-3-ynyl 4-methylbenzenesulfonate 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 but-3-ynyl 4-methylbenzenesulfonate?
For but-3-ynyl 4-methylbenzenesulfonate, Upstream Products: p-Toluenesulfonyl chloride, 3-Butyn-1-ol, Triethylamine; Downstream Products: 4-Bromo-1-butyne, Dimethyl propargylmalonate, 1-buten-3-yne.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "but-3-ynyl 4-methylbenzenesulfonate (CAS 23418-85-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49215-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.