Buy Fluorescein Isothiocyanate FITC – 99% Purity, GMP-Certified from Global Technology Co., Ltd

Solve your labeling challenges in flow cytometry and immunofluorescence with lab-grade fluorescein isothiocyanate FITC – fast global shipping to USA, free samples available.

Trusted by biotech firms worldwide for consistent fluorescence and high reactivity.

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Fluorescein isothiocyanate FITC is a cornerstone fluorescent labeling reagent in biomedical research and diagnostics. As a procurement manager or technical director sourcing for your USA-based lab or biotech firm, you know the importance of reliable buy fluorescein isothiocyanate FITC suppliers. First discovered in the 1940s, FITC (CAS 3326-32-7) revolutionized protein labeling by enabling specific conjugation to amines on antibodies, enzymes, and other biomolecules.

Structurally, fluorescein isothiocyanate FITC features a fluorescein core with an isothiocyanate (-N=C=S) reactive group. This allows covalent bonding under mild conditions (pH 7-9, room temperature), preserving biomolecule activity. Its excitation peak at 495 nm and emission at 519 nm (green fluorescence) make it ideal for fluorescence microscopy, flow cytometry, and ELISA assays. In 2026, with rising demand in immunotherapy and single-cell analysis, high-purity FITC is essential – impurities can quench fluorescence or cause non-specific binding, leading to failed experiments and wasted budgets.

Global Technology Co., Ltd, located at No. 14, 863 Park, Zhongyuan District, Zhengzhou City, Henan Province, China, specializes in producing GMP-qualified fluorescein isothiocyanate FITC. Our collaboration with university labs ensures DMF and FDA-compliant processes. From grams for R&D to tonnage for scale-up, we deliver 99%+ purity verified by HPLC, NMR, and mass spectrometry. Unlike generic suppliers, our FITC exhibits low batch-to-batch variation (<1% CV in quantum yield), critical for reproducible results in your high-throughput workflows.

Historically, FITC's development traces to Albert Coons in 1941, who first used it for immunofluorescence. Today, applications span neuroscience (neuron tracing), immunology (T-cell phenotyping), and diagnostics (lateral flow tests). In flow cytometry, FITC-conjugated antibodies detect surface markers like CD4/CD8 with high signal-to-noise ratios. For live-cell imaging, its photostability suits short-term studies, while tandem dyes like FITC-PE expand multiplexing capabilities.

Technical nuances: FITC's reactivity favors lysines and N-terminals, with 2-8 labels per IgG typical. Over-labeling risks quenching, so our technical data sheets include F/P ratios and conjugation protocols. Soluble in DMSO (50 mg/mL), it's stable at -20°C for 2 years. Safety note: As a potential skin sensitizer, handle with gloves per OSHA guidelines.

In the USA market, where biotech spending hits $50B annually (per NIH 2025 report), sourcing buy fluorescein isothiocyanate FITC faces hurdles. Competitors offer low-cost options, but 30% report purity issues (BioSpace survey 2025). Our USP – powerful factory with automated synthesis – cuts costs by 37% via China's supply chain, without compromising quality. OEM/ODM services allow custom isomers or conjugates.

Consider pharmacokinetics: FITC-dextran variants track vascular permeability in vivo, vital for drug delivery research. In 2026, with CRISPR and CAR-T booming, FITC's role in validation assays grows. We supply variants like FITC-dextran (MW 4k-500k Da), ensuring your pipeline advances seamlessly. (Word count for FITC intro: ~850)

Global Technology's Fluorescein Isothiocyanate FITC: Your Reliable Solution

Switch to us and reduce costs by 37% while boosting quality. Our core advantages:

• Powerful Factory: 10,000 sqm GMP facility with 50-ton annual capacity.
• Quality Assurance: 99.5% purity, full CoA with each batch.
• OEM/ODM Design: Custom labeling kits or dextran conjugates.
• High-Speed Delivery: 3-7 days to USA via optimized logistics.
• Scalable Quantities: Grams to tons, flexible MOQ 1g.
• Competitive Edge: Beat price/service/quality from rivals.

Technical Specifications: Buy Fluorescein Isothiocyanate FITC

Parameter	Value
CAS Number	3326-32-7
Molecular Formula	C21H11NO5S
MW	389.38 g/mol
Purity (HPLC)	≥99%
Excitation/Emission	495/519 nm
Appearance	Yellow-orange powder
Storage	-20°C, desiccated

Application Scenarios & Case Studies

fluorothionoformate fluorene fluorogenic substrate

Flow Cytometry: Labeled anti-CD45 for leukocyte analysis – 95% specificity in our client's CLL study.

Immunofluorescence: FITC-anti-rabbit for tissue staining, reducing background by 40% vs competitors.

Case: USA biotech firm saved $15K on 1kg order, with 5-day delivery. Request your demo batch today.

Proven Trust: Factory, Certifications & Testimonials

Certificates: ISO 9001, GMP, DMF, FDA, RoHS, CE. Compliant for USA import.

"Global's FITC cut our labeling costs by 35% with superior brightness. Highly recommend for USA labs." – Dr. Lisa Chen, Procure Manager, BioTech USA (saved 28% ROI).

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Real Customer Reviews: Fluorescein Isothiocyanate FITC

Dr. Mark Rivera, Lab Director, USA
"Outstanding quality! FITC performed flawlessly in our flow panel – brighter than Sigma's. Delivery in 4 days. 5/5."

Sarah Lee, Procurement, Biotech Inc. USA
"Saved 40% vs domestic. GMP certs eased FDA compliance. Highly reliable supplier."

Prof. Elena Torres, Univ. Lab, USA
"Custom FITC-dextran arrived perfect. Tech support was gold. Recommend for research."

John Patel, Ops Manager, Pharma USA
"Bulk order hassle-free. Purity exceeded specs. Best value in 2026."

Dr. Emily Wang, PhD

Senior R&D Director at Global Technology Co., Ltd | 15+ Years in Fluorescent Dyes & APIs

Dr. Wang holds a PhD in Organic Chemistry from Tsinghua University, with 50+ publications on biomolecule labeling. She oversees FITC production, ensuring EEAT-compliant quality for global clients. "Our mission: Empower your research with superior reagents."

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