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MedKoo CAT#: 558599

CAS#: 119-44-8

Description: Xanthopterin is a yellow, crystalline solid that inhibits the growth of lymphocytes produced by concanavalin.

Price and Availability

Size Price Shipping out time Quantity
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Pricing updated 2020-07-14. Prices are subject to change without notice.

Xanthopterin is not in stock, may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 558599
Name: Xanthopterin
CAS#: 119-44-8
Chemical Formula: C6H5N5O2
Exact Mass: 179.04
Molecular Weight: 179.14
Elemental Analysis: C, 40.23; H, 2.81; N, 39.10; O, 17.86

Synonym: Xanthopterin; Ksantopterin;

IUPAC/Chemical Name: 2-Aminopteridine-4(3H),6(5H)-dione


InChi Code: InChI=1S/C6H5N5O2/c7-6-10-4-3(5(13)11-6)9-2(12)1-8-4/h1H,(H,9,12)(H3,7,8,10,11,13)


Technical Data

Solid powder

>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).

Soluble in DMSO

Shelf Life:
>3 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:


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2: Lord JL, de Peyster A, Quintana PJ, Metzger RP. Cytotoxicity of xanthopterin and isoxanthopterin in MCF-7 cells. Cancer Lett. 2005 May 10;222(1):119-24. PubMed PMID: 15837549.

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7: Ziegler I. Pterins and the regulation of lymphocyte activation on the mode of xanthopterin action. Hoppe Seylers Z Physiol Chem. 1984 Jun;365(6):667-73. PubMed PMID: 6207092.

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9: Plotkin M, Volynchik S, Ermakov NY, Benyamini A, Boiko Y, Bergman DJ, Ishay JS. Xanthopterin in the Oriental hornet (Vespa orientalis): light absorbance is increased with maturation of yellow pigment granules. Photochem Photobiol. 2009 Jul-Aug;85(4):955-61. doi: 10.1111/j.1751-1097.2008.00526.x. Epub 2009 Feb 13. PubMed PMID: 19222794.

10: Johnson NP, Ji H, Steinberg TH, von Hippel PH, Marcus AH. Sequence-Dependent Conformational Heterogeneity and Proton-Transfer Reactivity of the Fluorescent Guanine Analogue 6-Methyl Isoxanthopterin (6-MI) in DNA. J Phys Chem B. 2015 Oct 8;119(40):12798-807. doi: 10.1021/acs.jpcb.5b06361. Epub 2015 Sep 25. PubMed PMID: 26368400; PubMed Central PMCID: PMC4948594.

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16: Roe FJ, Boyland E, Dukes CE, Mitchley BC. Failure of testosterone or xanthopterin to influence the induction of renal neoplasms by lead in rats. Br J Cancer. 1965 Dec;19(4):860-6. PubMed PMID: 5862663; PubMed Central PMCID: PMC2071403.

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18: Jose D, Weitzel SE, Baase WA, Michael MM, von Hippel PH. Mapping the interactions of the single-stranded DNA binding protein of bacteriophage T4 (gp32) with DNA lattices at single nucleotide resolution: polynucleotide binding and cooperativity. Nucleic Acids Res. 2015 Oct 30;43(19):9291-305. doi: 10.1093/nar/gkv818. Epub 2015 Aug 14. PubMed PMID: 26275774; PubMed Central PMCID: PMC4627071.

19: GONNARD P. [Action of xanthopterin on melanin formation in vitro]. Ann Pharm Fr. 1953 Jun;11(6):446-9. Undetermined Language. PubMed PMID: 13092701.

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