Fibrinopeptide B, human TFA

• CAT Number: I045977
• Molecular Formula: C68H94F3N19O27
• Molecular Weight: 1666.58
• Purity: ≥95%
• IUPAC Name: (4S)-4-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-3-methyl-2-[[2-[[(2S)-5-oxopyrrolidine-2-carbonyl]amino]acetyl]amino]butanoyl]amino]-4-oxobutanoyl]amino]-3-carboxypropanoyl]amino]-4-oxobutanoyl]amino]-4-carboxybutanoyl]amino]-5-[[2-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(1S)-4-carbamimidamido-1-carboxybutyl]amino]-1-hydroxypropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-2-oxoethyl]amino]-5-oxopentanoic acid;2,2,2-trifluoroacetic acid
• InChI: InChI=1S/C66H95N19O25.C2HF3O2/c1-31(2)53(85-49(91)29-73-55(99)35-16-19-47(89)75-35)64(108)83-42(26-46(68)88)61(105)82-43(27-52(96)97)62(106)81-41(25-45(67)87)60(104)78-37(18-21-51(94)95)57(101)77-36(17-20-50(92)93)56(100)72-28-48(90)76-39(23-33-11-6-4-7-12-33)58(102)80-40(24-34-13-8-5-9-14-34)59(103)84-44(30-86)63(107)74-32(3)54(98)79-38(65(109)110)15-10-22-71-66(69)70;3-2(4,5)1(6)7/h4-9,11-14,31-32,35-44,53-54,79,86,98H,10,15-30H2,1-3H3,(H2,67,87)(H2,68,88)(H,72,100)(H,73,99)(H,74,107)(H,75,89)(H,76,90)(H,77,101)(H,78,104)(H,80,102)(H,81,106)(H,82,105)(H,83,108)(H,84,103)(H,85,91)(H,92,93)(H,94,95)(H,96,97)(H,109,110)(H4,69,70,71);(H,6,7)/t32-,35-,36-,37-,38-,39-,40-,41-,42-,43-,44-,53-,54?;/m0./s1
• InChIKey: OOZQYTKTUVLQOA-UMXHTGBRSA-N
• SMILES: C[C@@H](C(N[C@@H](CCCNC(=N)N)C(=O)O)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC1=CC=CC=C1)NC(=O)[C@H](CC2=CC=CC=C2)NC(=O)CNC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CC(=O)O)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](C(C)C)NC(=O)CNC(=O)[C@@H]3CCC(=O)N3.C(=O)(C(F)(F)F)O

Fibrinopeptide B, human TFA(CAT: I045977) is a synthetic peptide corresponding to the N-terminal fragment released from the β-chain of human fibrinogen during thrombin-mediated cleavage. Along with fibrinopeptide A, it plays a central role in the initiation of fibrin polymerization and blood clot formation. As a stable trifluoroacetate (TFA) salt, it is widely used as a reference standard in coagulation studies, biomarker analysis, and mass spectrometry calibration. Fibrinopeptide B is particularly useful in investigating thrombin activity, fibrinogen processing, and platelet function. It serves as a reliable biochemical tool for research in hematology, cardiovascular disease, proteomics, and diagnostic method development.