Struggling to find a reliable methylene blue supplier? You’re not alone. With so many factories promising the best quality and prices, choosing the right manufacturer often feels overwhelming. Settling for the wrong supplier can mean inconsistent quality, delayed shipments, or hidden costs—risks you just can’t afford. The good news? Top-tier factories do exist, offering premium products, dependable service, and complete peace of mind. Curious which suppliers truly stand out?

Read on as we compare the leading methylene blue manufacturers—and discover the best fit for your needs!

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Methylene Blue API Manufacturers | Suppliers – PharmaCompass

Product Details:
PharmaCompass connects buyers with manufacturers and suppliers of Methylene Blue Active Pharmaceutical Ingredient (API). They also offer a variety of analytical and testing services related to pharmaceuticals.

Technical Parameters:
– Analytical method development including chiral HPLC & SFC, capillary
– Analytical testing services: chromatography (TLC/LC/HPLC/UPLC/GC), complete
– Testing for physicochemical properties: bulk and tapped density, particle size,

Application Scenarios:
– Sourcing Methylene Blue API for pharmaceutical manufacturing
– Analytical method development for API and finished dosage forms
– Quality control and regulatory testing of raw materials and finished products

Pros:
– Comprehensive suite of analytical and testing services covering a wide range of
– Direct connection to qualified manufacturers and suppliers with regulatory
– Support for both method development and routine quality testing

Cons:
– No direct mention of product pricing or availability for immediate purchase
– Technical specifications and performance details for Methylene Blue APIs are

Methylene Blue USP | API Manufacturer – Macsen Labs

Product Details:
Macsen Labs manufactures and supplies high-purity, injectable pharmaceutical grade Methylene Blue USP (Methylthioninium Chloride, CAS No. 122965-43-9), compliant with United States Pharmacopoeia standards, and also offers EP (PhEur), BP, and CP grades. The product is produced using a patented synthesis process and is available for pharmaceutical and related industrial applications.

Technical Parameters:
– Pharmacopoeial Name: Methylene Blue USP
– CAS No: 122965-43-9
– Molecular Formula: C16H18ClN3S
– Assay (HPLC): 97.0% – 103.0% (on dried basis)
– Impurities: NMT 0.15% residue on ignition, NMT 100 ppm zinc, NMT 200 ppm copper
– Loss on Drying: 8.0% to 22.0%
– Microbial limits: Bacterial endotoxin NMT 2.5 USP EU/mL, TAMC NMT 102 cfu/g
– Certified: US FDA, EU GMP – WC, WHO GMP, ISO

Application Scenarios:
– USFDA-approved treatment for acquired methemoglobinemia
– Antidote for ifosfamide and cyanide toxicity
– Treatment of urinary tract infections
– Investigational uses: antimalarial and anti-Alzheimer applications
– Anti-fungal and anti-parasitic agent in aquaculture

Pros:
– Manufactured using a patented and improved synthesis process
– High purity, injectable pharma grade API with multiple global pharmacopoeial
– Produced by a facility holding US FDA, EU GMP, WHO GMP, and ISO certifications
– Broad range of medical and research applications, including approved and

Cons:
– Potential side effects at higher doses such as Serotonin Syndrome and Hemolytic
– Slightly soluble in water and alcohol, which may impact certain formulations or

Methylene Blue | 122965-43-9 | Manufacturer & Supplier in US

Product Details:
Methylene blue (MB), also known as Methylthioninium chloride, is a tricyclic phenothiazine compound supplied as a dark green powder that turns blue in aqueous solution. It functions as a redox indicator, pharmaceutical compound, biological stain, and disinfectant.

Technical Parameters:
– Chemical formula: C16H18N3SCl
– Molecular weight: 319.85 g/mol
– Solubility: Water, glacial acetic acid, glycerol, ethanol 2%, acetone 0.5%;
– Melting point: 100-110°C; Density: 1.230 g/cm3; pKa: 7.5; pH ~3 (10g/L aqueous

Application Scenarios:
– Pharmaceutical: Treatment of methemoglobinemia, cyanide poisoning, ifosfamide
– Biological staining and diagnostics: Staining cells and microbes, biomedical
– Industrial & laboratory: Component in EMB agar for bacteriological work, redox
– Disinfection: Used in aquaculture for fungal/protozoal prevention, disinfects

Pros:
– Versatile with broad pharmaceutical, diagnostic, industrial, and laboratory
– Effective redox indicator, facile color change between blue (oxidized) and
– Potent therapeutic agent for diverse conditions ranging from poisoning and
– Strong antimicrobial and antifungal effects in aquaculture and PPE disinfection

Cons:
– Can cause notable side effects orally (e.g., headache, diarrhea, dizziness) and
– Some risk of discoloring urine and body tissues, and increased photosensitivity
– May prompt serious adverse effects such as cardiovascular or allergic reactions

Methylene blue | 61-73-4 supplier and manufacturer – BuyersGuideChem

Product Details:
Methylene blue (also known as methylene blue hydrate, C.I. 52015, basic blue 9) is a chemical compound with the formula C16H18N3S . Cl . x H2O and a molecular weight of 337.87. It is supplied by multiple international manufacturers, distributors, and bulk chemical producers, primarily targeting industrial, pharmaceutical, and scientific markets.

Technical Parameters:
– Chemical formula: C16H18N3S . Cl . x H2O
– Molecular weight: 337.87
– CAS No.: 61-73-4
– Available in various purity grades such as ‘pure’, ‘extra pure’, ‘high purity’

Application Scenarios:
– Used as a reagent in laboratories (e.g., for microscopy)
– Applications in pharmaceuticals, agrochemicals, and as an excipient
– Use in research, production, and distribution for life sciences and fine

Pros:
– Available from multiple international and reliable suppliers, offering choice
– Diverse purity grades and delivery forms to suit various industrial and
– Suppliers with significant industry experience and expertise (some with 20-50+

Cons:
– Pricing, packaging, and transport details require direct negotiations with each
– Quality and specifications may vary between suppliers, necessitating due

Methylene Blue Suppliers USA – American chemical suppliers

Product Details:
Offers methylene blue from various suppliers for laboratory, industrial, and research purposes. Available in different grades and packaging options.

Technical Parameters:
– Available purity levels often range from 98% to 99%
– Forms: powder and solution
– Chemical formula: C16H18ClN3S
– CAS number: 61-73-4

Application Scenarios:
– Biological and medical staining in laboratories
– Redox indicator in analytical chemistry
– Aquarium and fish care (as an antifungal and antibacterial agent)
– Dye and coloring agent in various industries

Pros:
– Widely available from multiple suppliers
– Offered in a range of purities and quantities to suit different needs
– Versatile applications across scientific, industrial, and research fields

Cons:
– Purity and formulation may vary between suppliers
– Some offerings may lack detailed specification or certification

Methylene-Blue-Anhydrous | CAS 61-73-4 – Spectrum Chemical

Product Details:
Methylene Blue Anhydrous (CAS 61-73-4), product code M3271, offered by Spectrum Chemical.

Technical Parameters:
– CAS Number: 61-73-4
– Anhydrous form
– Product Code: M3271

Methylene blue | Sigma-Aldrich – MilliporeSigma

Product Details:
Methylene Blue offered in various grades and forms, including powder and solution, suited for analytical, microbiological, and cell biology applications.

Technical Parameters:
– Chemical formula: C16H18ClN3S
– Molecular weight: 319.85 g/mol
– Available purity: Analytical/reagent grade, Certified for microscopy, BioReagent

Application Scenarios:
– Cell staining and microscopy
– Redox indicator in chemistry assays
– Microbiology: Staining bacteria for identification
– Medical applications as a diagnostic dye

Pros:
– High purity options for sensitive applications
– Available in multiple packaging sizes
– Well-characterized for consistent performance

Cons:
– May require careful handling due to staining properties
– Potential toxicity in biological or medical applications

Buy Methylene Blue | Liquid or Capsules | USA Made

Product Details:
The company offers methylene blue for sale in various concentrations and purities, available as a chemical reagent and research-grade compound suitable for laboratory and industrial use.

Technical Parameters:
– Available in multiple concentrations (e.g., 1%, 2.3%, and 10%)
– High-purity, pharmaceutical or laboratory grade
– Available in solution or powder form
– Packaged in various bottle sizes (e.g., 30mL, 100mL, 500mL)

Application Scenarios:
– Scientific research and laboratory experiments
– Staining agent in microscopy or histology
– Redox indicator in chemical processes
– Potential use in water treatment and aquaculture

Pros:
– Strict quality standards and high chemical purity
– Variety of concentration options and packaging sizes
– Designed for laboratory and research reliability
– Ready-to-use solutions available for convenience

Cons:
– Intended for research use only and not for human consumption
– Shipping restrictions may apply to certain locations

BUY METHYLENE BLUE (GMP grade) – Global API Supplier – MedicaPharma

Product Details:
Methylene Blue (GMP grade) supplied as an active pharmaceutical ingredient (API). MedicaPharma acts as a global supplier of over 400 GMP-grade APIs and specializes in niche pharmaceutical materials. Methylene Blue is categorized as a Dutch MOH and FDA licensed material, available in small GMP quantities with worldwide shipping (excluding the USA).

Technical Parameters:
– GMP (Good Manufacturing Practice) grade
– Dutch MOH and FDA licensed material
– Available in small and project-specific quantities
– Material can be fully analyzed according to any monograph upon request

Application Scenarios:
– Pharmaceutical manufacturing as an API
– Research and development projects requiring GMP-grade materials
– Use in specialty and niche pharmaceutical formulations

Pros:
– Global supply chain (except USA)
– Over 400 GMP-grade APIs available from multiple producers
– Custom sourcing and analytical services per monograph or client specification
– Supports small quantities and niche market needs

Cons:
– Cannot supply customers in the United States due to regulatory restrictions
– Awaiting product image or detailed technical documentation online

Methylene blue API Suppliers – Manufacturers and Distributors

Product Details:
Manufacture and supply of Active Pharmaceutical Ingredients (APIs), high-dose selenium injections, glycoprotein from Megathura crenulata, trace elements, dyes and fine chemicals, natural herbal extractions, contract development and manufacturing (CDMO) services, chemical and pharmaceutical intermediates.

Technical Parameters:
– GMP and cGMP compliant production facilities (some FDA-inspected, e.g. Axyntis
– Global regulatory support/documentation (e.g., USDMF, CoA available for many
– Production scale covering both multi-kilo and commercial phases (e.g.,
– Controlled manufacturing and supply chain management for regulated markets

Application Scenarios:
– Supply of APIs and intermediates for pharmaceutical manufacturing
– Process development and scale-up for new drug candidates
– Contract manufacturing for global pharma/biotech companies
– Provision of raw materials for health products, functional foods, drugs, and

Pros:
– Strong international presence and regulatory compliance in regulated markets
– Diverse range of products/services: API supply, CDMO, herbal extracts,
– Access to FDA-inspected and GMP-certified multi-site production capabilities
– Ability to span early process development to large-scale commercial

Cons:
– Limited specific technical data on individual product specifications
– Potential for complexity in coordination due to global operations and multiple
– No detailed information on price, delivery lead times, or after-sales support

Comparison Table

Company	Product Details	Pros	Cons	Website
Methylene Blue API Manufacturers	Suppliers – PharmaCompass	PharmaCompass connects buyers with manufacturers and suppliers of Methylene	Comprehensive suite of analytical and testing services covering a wide range of	No direct mention of product pricing or availability for immediate
Methylene Blue USP	API Manufacturer – Macsen Labs	Macsen Labs manufactures and supplies high-purity, injectable pharmaceutical	Manufactured using a patented and improved synthesis process High purity,	Potential side effects at higher doses such as Serotonin Syndrome and Hemolytic
Methylene Blue	122965-43-9	Manufacturer & Supplier in US	Methylene blue (MB), also known as Methylthioninium chloride, is a tricyclic	Versatile with broad pharmaceutical, diagnostic, industrial, and laboratory
Methylene blue	61-73-4 supplier and manufacturer – BuyersGuideChem	Methylene blue (also known as methylene blue hydrate, C.I. 52015, basic blue 9)	Available from multiple international and reliable suppliers, offering choice	Pricing, packaging, and transport details require direct negotiations with each
Methylene Blue Suppliers USA – American chemical suppliers	Offers methylene blue from various suppliers for laboratory, industrial, and	Widely available from multiple suppliers Offered in a range of purities and	Purity and formulation may vary between suppliers Some offerings may lack	www.americanchemicalsuppliers.com
Methylene-Blue-Anhydrous	CAS 61-73-4 – Spectrum Chemical	Methylene Blue Anhydrous (CAS 61-73-4), product code M3271, offered by Spectrum
Methylene blue	Sigma-Aldrich – MilliporeSigma	Methylene Blue offered in various grades and forms, including powder and	High purity options for sensitive applications Available in multiple packaging	May require careful handling due to staining properties Potential toxicity in
Buy Methylene Blue	Liquid or Capsules	USA Made	The company offers methylene blue for sale in various concentrations and	Strict quality standards and high chemical purity Variety of concentration
BUY METHYLENE BLUE (GMP grade) – Global API Supplier – MedicaPharma	Methylene Blue (GMP grade) supplied as an active pharmaceutical ingredient	Global supply chain (except USA) Over 400 GMP-grade APIs available from	Cannot supply customers in the United States due to regulatory restrictions Awai	www.medicapharma.com
Methylene blue API Suppliers – Manufacturers and Distributors	Manufacture and supply of Active Pharmaceutical Ingredients (APIs), high-dose	Strong international presence and regulatory compliance in regulated	Limited specific technical data on individual product specifications Potential	apicule.com

Frequently Asked Questions (FAQs)

What factors should I consider when selecting a methylene blue supplier?
Look for suppliers with a good reputation, high product quality, competitive pricing, reliable delivery, and proper certifications (such as ISO or GMP). Also, verify their experience in the chemical industry and their willingness to provide technical support or documentation.

How can I verify a supplier’s credibility and product quality?
Request safety data sheets, certificates of analysis, and third-party lab test results. Check for customer reviews, business licenses, and industry certifications. If possible, arrange for a site visit or request product samples for testing before placing a large order.

Is it important to check if the supplier provides customization or bulk order options?
Absolutely! Ensure the supplier can meet your specific quantity, packaging, and formulation needs. Customization and scalability are important for long-term partnerships as your business grows or your requirements change.

Can suppliers assist with shipping and export regulations?
Reputable suppliers often help with logistics, customs paperwork, and compliance with international regulations. It’s wise to confirm they have experience exporting methylene blue to your country and can offer guidance or handle shipments to ensure smooth delivery.

What payment terms and after-sales support should I expect?
Standard payment terms include a deposit with balance paid before shipment, but some suppliers offer credit for trusted buyers. Good suppliers also provide after-sales support, such as technical assistance, handling complaints, and resolving any product issues promptly.