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
CLP 181,200
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 Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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