The product is considered a 'powder' rather than 'crystalline'. There is typically water present in this material. This information is lot specific and reported in the Certificate of Analysis. While there is not specification in place, recent lots have reported a range of 7.2 - 9.2%. Please see the link below to review a sample or lot specific Certificate:
https://www.sigmaaldrich.com/product/sigma/p4126#product-documentation
P4126
Phe-Phe
≥98% (TLC)
Synonym(s):
L-Phenylalanyl-L-phenylalanine, Di-L-phenylalanine
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1 G
$173.00
About This Item
Linear Formula:
C6H5CH2CH(NH2)CONHCH(CH2C6H5)COOH · H2O
CAS Number:
Molecular Weight:
312.36 (anhydrous basis)
EC Number:
MDL number:
UNSPSC Code:
12352202
PubChem Substance ID:
NACRES:
NA.26
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Product Name
Phe-Phe,
assay
≥98% (TLC)
Quality Level
form
powder
color
white
storage temp.
−20°C
SMILES string
N[C@@H](Cc1ccccc1)C(=O)N[C@@H](Cc2ccccc2)C(O)=O
InChI
1S/C18H20N2O3/c19-15(11-13-7-3-1-4-8-13)17(21)20-16(18(22)23)12-14-9-5-2-6-10-14/h1-10,15-16H,11-12,19H2,(H,20,21)(H,22,23)/t15-,16-/m0/s1
InChI key
GKZIWHRNKRBEOH-HOTGVXAUSA-N
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Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Journal of medicinal chemistry, 56(12), 4953-4965 (2013-06-06)
We recently reported the discovery of H-Phe-Phe-NH2 as a small and high affinity ligand for the substance P 1-7 (SP(1-7), H-Arg-Pro-Lys-Pro-Gln-Gln-Phe-OH) specific binding site and its intriguing ability to reduce neuropathic pain. With the overall aim to develop stable and
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An evaluation of a dispersion-corrected density functional theory method (B3LYP-DCP) [I.D. Mackie, G.A. DiLabio, Interactions in large, polyaromatic hydrocarbon dimers: application of density functional theory with dispersion corrections, J. Phys. Chem. A 112 (2008) 10968-10976] for three systems of biochemical
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The advent of ultrahigh magnetic field and fast magic-angle-spinning (MAS) probe technology has led to dramatically enhanced spectral resolution and sensitivity in solid-state NMR spectroscopy. In particular, proton-based multidimensional solid-state NMR techniques have become feasible to investigate the structure and
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Peptidic self-assembled nanostructures are said to have a wide range of applications in nanotechnology, yet the mechanistic details of hierarchical self-assembly are still poorly understood. The Phe-Phe recognition motif of the Alzheimer's Abeta peptide is the smallest peptide able to
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Potential advantages of C2-symmetric inhibitors designed for the symmetric HIV-1 protease include high selectivity, potency, stability, and bioavailability. Pseudo-C2-symmetric monools and C2-symmetric diols, containing central hydroxymethylene and (R,R)-dihydroxyethylene moieties flanked by a variety of hydrophobic P1/P1' side chains, were studied
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