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ChemicalBook--->CAS DataBase List--->154445-77-9

154445-77-9

154445-77-9 Structure

154445-77-9 Structure
IdentificationMore
[Name]

FMOC-Arg(Pbf)-OH
[CAS]

154445-77-9
[Synonyms]

FMOC-(2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL)-L-ARGININE
FMOC-ARGININE(PBF)-OH
FMOC-ARG(PBF)
FMOC-ARG(PBF)-OH
FMOC-L-ARGININE(PBF)
FMOC-L-ARG(PBF)
FMOC-L-ARG(PBF)-OH
FMOC-NG-PBF-L-ARGININE
FMOC-N-OMEGA-(2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL)-L-ARGININE
N-ALPHA-9-FLUORENYLMETHOXYCARBONYL-NG-2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL-L-ARGININE
N-ALPHA-(9-FLUORENYLMETHOXYCARBONYL)-N-OMEGA-2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL-L-ARGININE
N-ALPHA-(9-FLUORENYLMETHYLOXYCARBONYL)-N'-2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL-L-ARGININE
N ALPHA-9-FLUORENYLMETHYLOXYCARBONYL-N OMEGA-2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL-L-ARGININE
N-ALPHA-FMOC-N'-2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL-L-ARGININE
N-ALPHA-FMOC-N-G-2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL-L-ALPHARGININE
N-ALPHA-FMOC-N-G-(2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL)-L-ARGININE
N-ALPHA-FMOC-N-OMEGA-(2,2,4,6,7-PENTAMETHYLDIHYDROBENZOFURAN-5-SULFONYL)-L-ARGININE
N-ALPHA-FMOC-N-OMEGA-PBF-L-ARGININE
na-fmoc-ng-(2,2,4,6,7-pentamethyl-*dihydrobenzofu
Nα-Fmoc-Nω-(2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl)-L-arginine
[EINECS(EC#)]

604-954-4
[Molecular Formula]

C34H40N4O7S
[MDL Number]

MFCD00235804
[Molecular Weight]

648.77
[MOL File]

154445-77-9.mol
Chemical PropertiesBack Directory
[Appearance]

white powde
[Melting point ]

132°C
[alpha ]

-5.5 º (c=1,DMF)
[density ]

1.37±0.1 g/cm3(Predicted)
[storage temp. ]

−20°C
[solubility ]

DMF (Sparingly), DMSO (Slightly), Methanol (Slightly)
[form ]

Solid
[pka]

3.83±0.21(Predicted)
[color ]

White to Off-White
[optical activity]

[α]/D -5.5±1.0°, c = 1 in DMF
[Detection Methods]

HPLC,NMR
[BRN ]

8302671
[InChIKey]

YUMOVWGGELTYES-LJAQVGFWSA-N
[SMILES]

C(O)(=O)[C@H](CCCNC=NNS(C1=C(C)C(C)=C2OC(C)(C)CC2=C1C)(=O)=O)NC(OCC1C2=C(C=CC=C2)C2=C1C=CC=C2)=O
[CAS DataBase Reference]

154445-77-9(CAS DataBase Reference)
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[WGK Germany ]

1
[HazardClass ]

IRRITANT
[HS Code ]

29350090
Hazard InformationBack Directory
[Chemical Properties]

white powde
[Uses]

Fmoc-Arg(Pbf)-OH, is an amino acid building block used in peptide synthesis. With a growing peptide drug market the fast, reliable synthesis of peptides is of great importance.
[Definition]

Fmoc-Arg(Pbf)-OH is the standard derivative for the introduction of Arg in Fmoc SPPS. In the preparation of peptides containing both Arg and Trp, it is recommended that this derivative is used in conjunction with Fmoc-Trp(Boc)-OH. The Pbf side-chain protecting group is removed with TFA approximately 1-2 times faster than Pmc. TFA cleavage is best performed in the presence of a silane scavenger. The Pbf group of Fmoc-Arg(Pbf)-OH can be cleaved under moderate acid conditions.
[General Description]

Fmoc-Arg(Pbf)-OH, which is the most used building block for the introduction of Arg into SPPS, is the most expensive of all protected proteinogenic amino acids currently on the market and, like all Arg derivatives, it undergoes an important side-reaction upon activation. It is a highly problematic amino acid because of its ability to react intramolecularly, leading to its δ-lactam derivative. Arg is the key for the development of the so-called Cell-Penetrating Peptides[1].
[Reactivity Profile]

The Pbf group of Fmoc-L-Arg(Pbf)-OH can be cleaved under moderate acid conditions. The amount of tryptophan alkylation is significantly reduced compared to other arginine side chain protecting groups, especially in the absence of scavengers. In one example reported in the literature, a peptide containing Arg(Pmc) was cleaved, and deprotected TFA resulted in 46% of the desired peptide.
[Solubility in organics]

≥64.9 mg/mL in DMSO; insoluble in H2O; ≥2.14 mg/mL in EtOH with ultrasonic
[References]

[1] Torre B, et al. Successful Development of a Method for the Incorporation of Fmoc-Arg(Pbf)-OH in Solid-Phase Peptide Synthesis using N Butylpyrrolidinone (NBP) as Solvent. Green Chemistry, 2020; 22: 3162-3169.
Spectrum DetailBack Directory
[Spectrum Detail]

FMOC-Arg(Pbf)-OH(154445-77-9)1HNMR
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