Papain
木瓜蛋白酶
Also known as: Papainase, Papaya proteinase I, Velardon, Vermizym, papain from carica papaya, papain from papaya latex
Papain (CAS 9001-73-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C19H29N7O6 and a molecular weight of 226.23246 g/mol. It is also known as Papainase, Papaya proteinase I and Velardon. Key properties include a density of 1.5±0.1 g/cm3 and a flash point of 29 °C. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 9001-73-4
- Jingsj CID
- J-1095098-2
- Molecular Formula
- C19H29N7O6
- Chinese Name
- 木瓜蛋白酶
- Molecular Weight
- 226.23246 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Density | 1.5±0.1 g/cm3 |
|---|---|
| Flash Point | 29 °C |
| Exact Mass | 451.217926 |
| LogP | -1.47 |
| Appearance | lyophilized powder | almost white |
| Refractive Index | 1.652 |
| Additional Property | H2O: soluble1.2mg/mL | Soluble in water, insoluble in most organic solvents. |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H334 — May cause allergy or asthma symptoms if inhaled
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Machado MN, et al. Bone Marrow-Derived Mononuclear Cell Therapy in Papain-Induced Experimental Pulmonary Emphysema. Front Physiol. 2018 Feb 20;9:121. |
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Frequently Asked Questions
What is the CAS number of Papain?
The CAS number of Papain is 9001-73-4.
What are the molecular formula and molecular weight of Papain?
Papain has molecular formula C19H29N7O6 and molecular weight 226.23246 g/mol.
Is Papain hazardous?
Papain has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H334 — May cause allergy or asthma symptoms if inhaled.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Papain (CAS 9001-73-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1095098-2 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.