Acetaminophen
Also known as: 4-Acetamidophenol, Paracetamol, APAP, p-Hydroxyacetanilide, N-(4-Hydroxyphenyl)acetamide, N-Acetyl-p-aminophenol, Panadol, Tylenol
Acetaminophen (CAS 103-90-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C8H9NO2 and a molecular weight of 151.163 g/mol. Key properties include a melting point of 168-172 °C(lit.), a boiling point of 387.8±25.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 188.4±23.2 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H317 — May cause an allergic skin reaction. It is listed by 2 suppliers, 1 of which publish reference prices, from 0.24 to 200.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 103-90-2
- Jingsj CID
- J-36008-7
- Molecular Formula
- C8H9NO2
- Molecular Weight
- 151.163 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | AR 500g | ¥120.00 | $0.04 /gBest ¥0.24/g CNY | CN China MOQ 500g | |
In Stock | 药用级 500g | ¥210.00 | $0.06 /g ¥0.42/g CNY | CN China MOQ 500g | |
In Stock | 药用级 100g | ¥70.00 | $0.1 /g ¥0.70/g CNY | CN China MOQ 100g |
Physicochemical Properties
| Melting Point | 168-172 °C(lit.) |
|---|---|
| Boiling Point | 387.8±25.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 188.4±23.2 °C |
| Exact Mass | 151.063324 |
| PSA | 49.33000 |
| LogP | 0.34 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.619 |
| Additional Property | 14 g/L (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
Activity & Biological Data
| Target | COX-2:25.8 μM (IC50) COX-1:113.7 μM (IC50) Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Hinz, B, et al. Acetaminophen (paracetamol) is a selective cyclooxygenase-2 inhibitor in man. FASEB J, 2008. 22(2): p. 383-90. [2]. Dini? M, et al. Lactobacillus fermentum Postbiotic-induced Autophagy as Potential Approach for Treatment ofAcetaminophen Hepatotoxicity. Front Microbiol. 2017 Apr 6;8:594. [3]. Uchida NS, et al. Hepatoprotective Effect of Citral on Acetaminophen-Induced Liver Toxicity in Mice. Evid Based Complement Alternat Med. 2017;2017:1796209. |
Customs & Trade Information
| HS Code | 29242930 |
|---|
Frequently Asked Questions
What is the CAS number of Acetaminophen?
The CAS number of Acetaminophen is 103-90-2.
What are the molecular formula and molecular weight of Acetaminophen?
Acetaminophen has molecular formula C8H9NO2 and molecular weight 151.163 g/mol.
Which suppliers offer Acetaminophen?
2 supplier(s) listed; reference unit price ¥0.24–200.00 /g.
Is Acetaminophen hazardous?
Acetaminophen has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of Acetaminophen?
For Acetaminophen, Downstream Products: N-[4-(quinolin-2-ylmethoxy)phenyl]acetamide, 4-Acetamidophenyl 2,3,4-tri-O-acetyl-β-D-glucuronide methyl ester, N-[4-(2-hydroxyethoxy)phenyl]acetamide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Acetaminophen (CAS 103-90-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36008-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.