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RESEARCH USE ONLY: All products are intended for research use only as defined by the FDA. Not for use in diagnostic procedures, human use, or veterinary use. 

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A white bottle labeled "Methylene Blue Capsules (10mg/capsule, 30 capsules)" provides high-quality methylene blue designed for advanced research applications.
Certificate of analysis for Methylene Blue

Methylene Blue Capsules (10mg/capsule, 30 capsules)

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12,682 Reviews

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Methylene Blue 10mg capsules contain methylthioninium chloride (CAS 61-73-4, MW 319.85 g/mol) — a phenothiazinium compound that has been used as a research tool since the 1800s. Its value in modern labs comes from its ability to act as an alternative electron carrier in the mitochondrial electron transport chain, shuttling electrons from NADH to cytochrome c and effectively bypassing Complex I and III when they’re impaired. 30 capsules per unit. Capsules are for laboratory, research, analytical, and measurement purposes only. Capsules offer a protective barrier between sensitive chemical compounds and environmental elements. Not for human consumption.

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Weight 0.03125 lbs
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⚠️ Disclaimer: THIS PRODUCT, SOLD BY LOTI LABS, IS INTENDED AS A RESEARCH CHEMICAL ONLY.
This designation allows the use of this chemical strictly for in-vitro laboratory testing and experimentation. No other uses or purposes are permitted. All information provided on this website is for educational purposes and has been compiled from multiple sources believed to be accurate. Human or animal use of this product is strictly forbidden by law. This product is not a drug, food or cosmetic and may not be misbranded, mislabeled or misused as such. Anyone not adhering to these terms will be blacklisted and forbidden from purchasing.

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Methylene Blue Molecular Structure

  • Chemical Name: 3,7-bis(dimethylamino)phenothiazin-5-ium chloride
  • Synonyms: Methylthioninium chloride, Basic Blue 9, CI 52015
  • Molecular Formula: C₁₆H₁₈ClN₃S
  • Molecular Weight: 319.85 g/mol
  • PubChem CID: 6099
  • CAS #: 61-73-4

Methylene blue is a phenothiazinium heterocycle — three fused rings with a central thiazine, dimethylamino groups at positions 3 and 7, and that distinctive deep blue color in its oxidized state. The key to its usefulness is that it flips between two redox forms: oxidized MB⁺ (blue) and reduced leucomethylene blue MBH (colorless).

The molecule is planar and accumulates in mitochondria. Because it absorbs strongly at 665 nm, you can track its redox state spectrophotometrically in real time during experiments.

Storage and Safety Guidelines

  • Store methylene blue capsules at room temperature (15–25°C) in a dry, light-protected area.
  • The compound is hygroscopic and photosensitive; keep containers sealed when not in use.
  • Methylene blue stains skin, gloves, lab coats, and surfaces. Always wear gloves and eye protection.
  • Work in a well-ventilated area and follow your institution’s chemical hygiene protocols.
  • Dispose of waste according to local regulations.

Why Buy Methylene Blue Capsules from Loti Labs?

  • Analytical Verification: Third-party HPLC and mass spectrometry confirm identity and ≥98% purity.
  • Light-Protected Packaging: Prevents photodegradation during storage and shipping.
  • Research Documentation: Full certificates of analysis included.
  • Batch Consistency: Reliable lot-to-lot quality for reproducible results.

Product Disclaimer

All Loti Labs products, including methylene blue capsules, are for research use only. This designation ensures regulatory compliance and supports legitimate scientific research.

Shipping Policy and Guarantee

  • Orders placed before 1pm EST Monday-Friday ship same day; orders after 1pm or on weekends ship next business day.
  • Packaging is light-shielded with tracking on every shipment.
  • 30-Day Money Back Guarantee on unopened products for quality issues, shipping damage, or change of mind.

About Loti Labs

Your Trusted Partner in Research Excellence

A blue, stylized illustration of a cell undergoing division, featuring visible molecular structures and suspended bubbles.Every batch tested. No fillers. No guesswork. At Loti Labs, we’re more than just a supplier — we’re your partner in achieving breakthrough results. With 14+ years of proven expertise, we deliver a boutique experience built on premium quality, fast fulfillment, and client-first service.

Uncompromising Quality Assurance

Each product is thoroughly tested and verified to meet the highest industry standards, ensuring accuracy and reliability for your research.

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Our experienced team is here to assist with inquiries, and special requests, providing responsive, human support at every step.

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Orders placed before cutoff times are processed with urgency and shipped rapidly, so your research never slows down.

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A white bottle labeled "Methylene Blue Capsules (10mg/capsule, 30 capsules)" provides high-quality methylene blue designed for advanced research applications.
Methylene Blue Capsules (10mg/capsule, 30 capsules)

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