Catalog No. Size PriceQuantity
M19153-C Contact for quotation $100Unavailable


Aminopterin (4-Aminofolic acid), the 4-amino derivative of folic acid, is a folic acid antagonist. Aminopterin catalyses the reduction of folic acid to tetrahydrofolic acid, and competitively inhibits dihydrofolate reductase (DHFR) with a Ki of 3.7 pM. Aminopterin has anticancer and immunosuppressive activity. Aminopterin is used in treatment of pediatric leukemia.

Product information

CAS Number: 54-62-6

Molecular Weight: 440.41

Formula: C19H20N8O5

Chemical Name: (2S)-2-[(4-{[(2,4-diaminopteridin-6-yl)methyl]amino}phenyl)formamido]pentanedioic acid

Smiles: NC1=NC(N)=NC2=NC=C(CNC3C=CC(=CC=3)C(=O)N[C@@H](CCC(O)=O)C(O)=O)N=C12


InChi: InChI=1S/C19H20N8O5/c20-15-14-16(27-19(21)26-15)23-8-11(24-14)7-22-10-3-1-9(2-4-10)17(30)25-12(18(31)32)5-6-13(28)29/h1-4,8,12,22H,5-7H2,(H,25,30)(H,28,29)(H,31,32)(H4,20,21,23,26,27)/t12-/m0/s1

Technical Data

Appearance: Solid Power

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

Solubility: DMSO : 14.71 mg/mL (33.40 mM; Need ultrasonic). H2O : 5 mg/mL (11.35 mM; ultrasonic and adjust pH to 8 with NaOH).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

The IC50 value of Aminopterin (4-Aminofolic acid) against CCRF-CEM cells during 72 h of exposure is 4.4 nM. Aminopterin (4-Aminofolic acid) produces a marked inhibition of mitosis in low concentrations in human leukemic leukocytes.

Products are for research use only. Not for human use.

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