Microcystin-LR
微囊藻毒素LR
Also known as: MC-LR, Cyanoginosin-LR, Fast-death factor, Toxin T 17, Cyclo(D-Ala-L-Leu-[(3S)-3-methyl-D-βAsp-]-L-Arg-[(2S,3S)-2-methyl-3-[(1E,3E,5S,6S)-3,5-dimethyl-6-methoxy-7-phenyl-1,3-heptadiene-1-yl]-βAla-]-D-γGlu-N-methyl-Dha-)
Microcystin-LR (CAS 101043-37-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C49H74N10O12 and a molecular weight of 995.172 g/mol. It is also known as MC-LR, Cyanoginosin-LR and Fast-death factor. Key properties include a density of 1.3±0.1 g/cm3 and a flash point of 11 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H301 — Toxic if swallowed and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 101043-37-2
- Jingsj CID
- J-1986417-6
- Molecular Formula
- C49H74N10O12
- Chinese Name
- 微囊藻毒素LR
- Molecular Weight
- 995.172 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Density | 1.3±0.1 g/cm3 |
|---|---|
| Flash Point | 11 °C |
| Exact Mass | 994.548767 |
| PSA | 340.64000 |
| LogP | -1.54 |
| Appearance | solid film |
| Refractive Index | 1.598 |
| Additional Property | ethanol: 1 mg/mL |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H301 — Toxic if swallowed
- H311 — Toxic in contact with skin
- H331 — Toxic if inhaled
- H370 — Causes damage to organs
Activity & Biological Data
| Target | IC50: 1.7 nM (PP1), 0.04 nM (PP2A)[1]. |
|---|---|
| Additional Information | [1]. Honkanen RE, et al. Characterization of microcystin-LR, a potent inhibitor of type 1 and type 2A protein phosphatases. J Biol Chem. 1990 Nov 15;265(32):19401-4. [2]. Lone Y, et al. Microcystin-LR Induced Immunotoxicity in Mammals. J Toxicol. 2016:8048125. |
Frequently Asked Questions
What is the CAS number of Microcystin-LR?
The CAS number of Microcystin-LR is 101043-37-2.
What are the molecular formula and molecular weight of Microcystin-LR?
Microcystin-LR has molecular formula C49H74N10O12 and molecular weight 995.172 g/mol.
Is Microcystin-LR hazardous?
Microcystin-LR has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H301 — Toxic if swallowed; H311 — Toxic in contact with skin.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Microcystin-LR (CAS 101043-37-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1986417-6 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.