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D7006

Sigma-Aldrich

Dihydrofolic acid

≥90%

Synonym(s):

7,8-Dihydropteroyl-L-glutamic acid, Dihydropteroyl-L-glutamic acid, FAH2

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$131.00
25 MG
$295.00
100 MG
$931.00

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10 MG
$131.00
25 MG
$295.00
100 MG
$931.00

About This Item

Empirical Formula (Hill Notation):
C19H21N7O6
CAS Number:
4033-27-6
Molecular Weight:
443.41
Beilstein/REAXYS Number:
69017
MDL number:
MFCD00083619
UNSPSC Code:
12352106
PubChem Substance ID:
24894068
NACRES:
NA.79

$131.00

Available to ship onMay 02, 2025Details

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biological source

synthetic (organic)

Quality Level

200

assay

≥90%

form

powder

color

light yellow to dark yellow-orange

storage temp.

−20°C

SMILES string

NC1=NC(=O)C2=C(NCC(CNc3ccc(cc3)C(=O)N[C@@H](CCC(O)=O)C(O)=O)=N2)N1

InChI

1S/C19H21N7O6/c20-19-25-15-14(17(30)26-19)23-11(8-22-15)7-21-10-3-1-9(2-4-10)16(29)24-12(18(31)32)5-6-13(27)28/h1-4,12,21H,5-8H2,(H,24,29)(H,27,28)(H,31,32)(H4,20,22,25,26,30)/t12-/m0/s1

InChI key

OZRNSSUDZOLUSN-LBPRGKRZSA-N

Gene Information

human ... DHFRP1(573971)
mouse ... Dhfr(13361)

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General description

Intermediate in mammalian conversion of dietary folic acid to tetrahydrofolate by dihydrofolate reductase (DHFR). In bacteria, dihydrofolic acid is generated from 7,8-dihydropteroate by dihydrofolate synthetase.

Application

Dihydrofolic acid has been used in diaphorase-coupled assay for dihydrofolate reductase (DHFR) activity.[1] It has also been used as a component in assay buffer to determine dihydrofolate reductase (DHFR) activity.[2]

Biochem/physiol Actions

Folic acid (FA) and dihydrofolic acid (FAH2) are substrates of dihydrofolate reductase(s) which reduce them to tetrahydrofolate (THF), which in turn supports ‘one carbon′ transfer. Tetrahydrofolates are required for de novo synthesis of purines, thymidylic acid and various amino acids and for post-translational methylation (epigenetics).

Packaging

Sealed ampule.

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pictograms

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GHS07

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Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000406761
0000397548
0000385525
0000371612
0000366397

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Tobias Sahr et al.
The Biochemical journal, 396(1), 157-162 (2006-02-10)
pABA (p-aminobenzoate) is a precursor of folates and, besides esterification to glucose, has no other known metabolic fate in plants. It is synthesized in two steps from chorismate and glutamine, the first step being their conversion into glutamate and ADC
Xingju Song et al.
Scientific reports, 7(1), 514-514 (2017-04-02)
The larval stage of Echinococcus granulosus causes cystic echinococcosis (CE), a neglected tropical disease that leads to morbidity and mortality in humans and livestock worldwide. Here, we identified and characterized dihydrofolate reductase (Eg-DHFR) from E. granulosus, and evaluated its potential
Sri Rama Koti Ainavarapu et al.
Biophysical journal, 89(5), 3337-3344 (2005-08-16)
We use single-molecule force spectroscopy to demonstrate that the mechanical stability of the enzyme dihydrofolate reductase (DHFR) is modulated by ligand binding. In the absence of bound ligands, DHFR extends at very low forces, averaging 27 pN, without any characteristic
Karunesh Arora et al.
Journal of the American Chemical Society, 131(15), 5642-5647 (2009-03-28)
Conformational changes in enzymes are well recognized to play an important role in the organization of the reactive groups for efficient catalysis. This study reveals atomic and energetic details of the conformational change process that precedes the catalytic reaction of
T Yoshikawa et al.
Biotechnology progress, 16(5), 710-715 (2000-10-12)
Previously, we established an easy and quick construction method for obtaining a stable and highly productive gene-amplified recombinant Chinese hamster ovary (CHO) cell line. With a gradual increase in methotrexate (MTX) concentration, gene-amplified cell pools had high and stable specific
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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