WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 406446

CAS#: 152075-98-4

Description: Scytonemin is a biological pigment synthesized by many strains of cyanobacteria, including Calothrix sp., Lyngbya aestuarii, and others. Scytonemin is also a potent PKL1 inhibitor, which inhibits cell proliferation and arrests cell cycle through downregulating Plk1 activity in many cancel cells. Scytonemin was able to inhibit the proliferation of three myeloma cells in a dose-dependent manner, while U266 was the most sensitive one to scytonemin. Scytonemin , representing a novel Plk1 inhibitor, induced the inhibition of cell growth and cell cycle arrest in multiple myeloma cells by specifically decreasing Plk1 activity.

Chemical Structure

CAS# 152075-98-4

Theoretical Analysis

MedKoo Cat#: 406446
Name: Scytonemin
CAS#: 152075-98-4
Chemical Formula: C36H20N2O4
Exact Mass: 544.14231
Molecular Weight: 544.555
Elemental Analysis: C, 79.40; H, 3.70; N, 5.14; O, 11.75

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Synonym: Scytonemin;

IUPAC/Chemical Name: (3E,3'E)-3,3'-bis(4-hydroxybenzylidene)-[1,1'-bi(cyclopenta[b]indole)]-2,2'(3H,3'H)-dione.


InChi Code: InChI=1S/C36H20N2O4/c39-21-13-9-19(10-14-21)17-25-33-29(23-5-1-3-7-27(23)37-33)31(35(25)41)32-30-24-6-2-4-8-28(24)38-34(30)26(36(32)42)18-20-11-15-22(40)16-12-20/h1-18,39-40H/b25-17+,26-18+

SMILES Code: O=C(/C1=C/C2=CC=C(O)C=C2)C(C(C(/C3=C/C4=CC=C(O)C=C4)=O)=C5C3=NC6=C5C=CC=C6)=C7C1=NC8=C7C=CC=C8

Appearance: Yellow solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 544.555 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Zhang G, Zhang Z, Liu Z. Scytonemin inhibits cell proliferation and arrests cell cycle through downregulating Plk1 activity in multiple myeloma cells. Tumour Biol. 2013 Aug;34(4):2241-7. doi: 10.1007/s13277-013-0764-5. Epub 2013 Apr 13. PubMed PMID: 23584897.

2: Zhang G, Zhang Z, Liu Z. Polo-like kinase 1 is overexpressed in renal cancer and participates in the proliferation and invasion of renal cancer cells. Tumour Biol. 2013 Jun;34(3):1887-94. doi: 10.1007/s13277-013-0732-0. Epub 2013 Mar 14. PubMed PMID: 23494182.

3: Zhang Z, Zhang G, Kong C. High expression of polo-like kinase 1 is associated with the metastasis and recurrence in urothelial carcinoma of bladder. Urol Oncol. 2013 Oct;31(7):1222-30. doi: 10.1016/j.urolonc.2011.11.028. Epub 2011 Dec 20. PubMed PMID: 22192978.

4: Duan Z, Ji D, Weinstein EJ, Liu X, Susa M, Choy E, Yang C, Mankin H, Hornicek FJ. Lentiviral shRNA screen of human kinases identifies PLK1 as a potential therapeutic target for osteosarcoma. Cancer Lett. 2010 Jul 28;293(2):220-9. doi: 10.1016/j.canlet.2010.01.014. Epub 2010 Feb 9. PubMed PMID: 20144850.

5: Zhang Z, Su WH, Feng C, Yu DH, Cui C, Xu XY, Yu BZ. Polo-like kinase 1 may regulate G2/M transition of mouse fertilized eggs by means of inhibiting the phosphorylation of Tyr 15 of Cdc2. Mol Reprod Dev. 2007 Oct;74(10):1247-54. PubMed PMID: 17342725.

6: McInnes C, Mezna M, Fischer PM. Progress in the discovery of polo-like kinase inhibitors. Curr Top Med Chem. 2005;5(2):181-97. Review. PubMed PMID: 15853646.

Additional Information

Scytonemin was originally discovered in 1849, although the structure remained unsolved until 1993. Scytonemin is believed to act as a bacterial sunscreen with a broad absorption from 325-425 nm and a separate maxima at 250 nm,[4] and its biosynthesis triggered by exposure to UV light. (