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Research use only. Not for human or veterinary use. €200 minimum order
For research use only. Products sold by Peptide Shop are intended for in-vitro laboratory research only. Not for human or veterinary diagnostic, therapeutic, cosmetic or consumption purposes.
[Glu1]-Fibrinopeptide B — MS Lock-Mass Standard, 1 mg, ≥99 % product vial
Protein Analysis & Standards

[Glu1]-Fibrinopeptide B — MS Lock-Mass Standard, 1 mg, ≥99 %

>- [Glu1]-Fibrinopeptide B (Glu-Fib), the universal LC-MS lock-mass and collision-energy tuning reference. ≥99% HPLC. RUO.

≥ 98% COA supported RUO
CAS
103213-49-6
Molecular weight
1570.57 g/mol
Storage
-20°C lyophilised, desiccated, protected from light (research only)
Package sizes
1 × 1 mg vial

Description

[Glu1]-Fibrinopeptide B — MS Lock-Mass Standard, 1 mg, ≥99 % — research overview

[Glu1]-Fibrinopeptide B (Glu-Fib) is the most widely cited LC-MS lock-mass and collision-energy tuning peptide. It is the de-facto QC reference for Waters Synapt, Xevo and Thermo Orbitrap workflows.

Peptide Shop supplies [Glu1]-Fibrinopeptide B (1 × 1 mg vial) as a sealed research material with lot-level documentation. This product is supplied for in-vitro laboratory research only and is not intended for human use, veterinary use, therapy, diagnosis, cosmetic application or consumption.

Research applications

  • LC-MS lock-mass reference (Waters LockSpray)
  • Collision-energy / CID tuning reference compound
  • Peptide-fragmentation library benchmarking
  • Daily LC-MS/MS QC and system-suitability

Sequence and analytical data

≥99% HPLC, [M+2H]2+ = 785.84. Identity confirmed by ESI-MS and tandem-MS fragmentation pattern.

Storage and handling

Store lyophilised at -20 °C. Reconstitute in 50% acetonitrile / 0.1% formic acid at 100 fmol/µL for routine LockSpray use.

Documentation

A lot-specific Certificate of Analysis is available in EN, DE, FR and ES from the product detail page after dispatch. The CoA reports HPLC purity, identity confirmation, appearance, and storage and handling guidance for the dispatched lot.

Sequence & data

Product IDpeptide-glu-fibrinopeptide-b
CAS103213-49-6
Molecular weight1570.57 g/mol
Purity≥ 98%
SequenceEGVNDNEEGFFSAR

Storage & handling

-20°C lyophilised, desiccated, protected from light (research only)

Keep lyophilised material sealed and protected from moisture. Reconstituted materials should be handled according to validated laboratory protocols and disposed of as research waste.

Certificate of analysis

Batch-specific COA documentation is supplied according to the COA policy and may include HPLC purity, identity and lot information where available.

Other languages

FAQs

What is the recommended LockSpray concentration?

100–500 fmol/µL infused at 5–10 µL/min is typical for Waters LockSpray-equipped instruments.

Why is Glu-Fib the standard CID tuning peptide?

Its 14-residue length, mid-mass [M+2H]2+ at 785.8 and well-characterised fragmentation pattern make it ideal for collision-energy optimisation across instrument platforms.

Heavy-label variant available?

Yes — ¹³C/¹⁵N-labelled Glu-Fib for SIL quantitation is available on request.