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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