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    NorrChemica — Chemicals & Analysis, Helsinki
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    • Chemical structure of Methylene Blue trihydrate, CAS 7220-79-3, ≥99.5% — cationic phenothiazinium (thiazine) dye and redox indicator widely used as a biological and histological stain, electron-transfer mediator, and photosensitiser in microscopy, redox titrations, and photochemistry. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Methylene Blue Trihydrate | CAS 7220-79-3 | ≥99.5%

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      Methylene Blue TrihydrateCAS 7220-79-3 · ≥99.5%

      Regular price From €34,80 (incl. VAT)
      Regular price €34,80 Sale price From €34,80 (incl. VAT)
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    • Chemical structure of Toluidine Blue O, CAS 92-31-9, ≥75% dye content — cationic thiazine metachromatic dye (chloride salt) widely used as a histological stain for mast cells, cartilage, and Nissl substance, and as a vital stain in oral cancer screening. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Toluidine Blue O | CAS 92-31-9 | Dye Content ≥75%

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      Toluidine Blue OCAS 92-31-9 · Dye Content ≥75%

      Regular price From €44,90 (incl. VAT)
      Regular price €44,90 Sale price From €44,90 (incl. VAT)
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    • Chemical structure of Alcian Blue 8GX, CAS 33864-99-2, ≥80% dye content — copper phthalocyanine-based cationic dye widely used as a histological stain for acidic mucopolysaccharides, glycosaminoglycans, and cartilage proteoglycans in pathology and developmental biology. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.​​​​​​​​​​​​​​​​

      Alcian Blue 8GX | CAS 33864-99-2 | Dye Content ≥80%

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      Alcian Blue 8GXCAS 33864-99-2 · Dye Content ≥80%

      Regular price From €47,20 (incl. VAT)
      Regular price €47,20 Sale price From €47,20 (incl. VAT)
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    • Chemical structure of Victoria Blue B (Basic Blue 26; C.I. 44045), CAS 2580-56-5, 98%— blue cationic triarylmethane dye bearing a naphthylamine group, drawn as the dye cation with its chloride counterion (C33H32ClN3, the form supplied). Used as a biological stain — a nuclear stain in cytology and histochemistry and a reagent for the quantitative determination of phospholipids — and as a colorant for textiles, paper and leather. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Victoria Blue B | CAS 2580-56-5 | ≥98%

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      Victoria Blue BCAS 2580-56-5 · ≥98%

      Regular price From €39,90 (incl. VAT)
      Regular price €43,20 Sale price From €39,90 (incl. VAT)
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    • Chemical structure of Nile Blue Chloride, CAS 2381-85-3, reagent grade — benzophenoxazine cationic fluorescent dye (C.I. 51180 / Basic Blue 12) with red-orange emission used as a research-grade fluorochrome for differential staining of neutral and polar lipids in histology, fluorescent lipid droplet visualization in cell biology and lipid metabolism research, hepatic lipid imaging, and electroactive dye applications in biosensor research. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Nile Blue Chloride | CAS 2381-85-3 | Reagent Grade

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      Nile Blue ChlorideCAS 2381-85-3 · Reagent Grade

      Regular price From €29,90 (incl. VAT)
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    • Chemical structure of Victoria Blue R (Basic Blue 11; C.I. 44040), CAS 2185-86-6, 98% — blue cationic triarylmethane (diphenylnaphthylmethane) dye with an N-ethyl naphthylamine group, drawn as the dye cation with its chloride counterion (C29H32ClN3, the form supplied). Used mainly as an industrial colorant for silk, wool, acrylic, paper and leather and in lake pigments; only rarely a biological stain. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Victoria Blue R | CAS 2185-86-6 | ≥98%

      Victoria Blue RCAS 2185-86-6 · ≥98%

      Regular price From €49,20 (incl. VAT)
      Regular price Sale price From €49,20 (incl. VAT)
    • Chemical structure of Trypan Blue (Direct Blue 14), CAS 72-57-1, ≥70% dye content — bis-azo anionic dye (C.I. 23850 / Direct Blue 14) with deep blue absorbance used as a research-grade vital stain in the Trypan Blue exclusion cell viability assay, mammalian cell counting in tissue culture, histological staining of necrotic tissue, and tissue scaffold decellularization research. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Trypan Blue (Direct Blue 14) | CAS 72-57-1 | Dye Content ≥70%

      Trypan Blue (Direct Blue 14)CAS 72-57-1 · Dye Content ≥70%

      Regular price From €24,90 (incl. VAT)
      Regular price Sale price From €24,90 (incl. VAT)
    • Chemical structure of Thymol Blue, CAS 76-61-9, Indicator Grade — sulfonephthalein two-range pH indicator of the Clark–Lubs series, red→yellow at pH 1.2–2.8 and yellow→blue at pH 8.0–9.6, used in acid–base and non-aqueous titrations, universal indicator formulations, and spectrophotometric seawater pH measurement on the total scale. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Thymol Blue | CAS 76-61-9 | Indicator Grade

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      Thymol BlueCAS 76-61-9 · Indicator Grade

      Regular price From €39,90 (incl. VAT)
      Regular price €69,20 Sale price From €39,90 (incl. VAT)
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    • Chemical structure of Evans Blue (Direct Blue 53; C.I. 23860), CAS 314-13-6, 85%— blue bis-azo (disazo) dye, the tetrasodium salt of a bis(naphthylazo)bitolyl drawn with all four –SO3⁻ Na⁺ groups (the form supplied). A fluorescent, high-affinity serum-albumin-binding tracer used to estimate blood/plasma volume and to assess vascular permeability and blood-brain-barrier integrity via Evans Blue-albumin extravasation, and as a vital stain. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Evans Blue | CAS 314-13-6 | Dye Content ≥85%

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      Evans BlueCAS 314-13-6 · Dye Content ≥85%

      Regular price From €39,90 (incl. VAT)
      Regular price €49,20 Sale price From €39,90 (incl. VAT)
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    • Chemical structure of Guaiazulene (1,4-dimethyl-7-isopropylazulene), CAS 489-84-9, ≥97% — deep-blue non-alternant aromatic sesquiterpene (C15H18) on the fused five- and seven-membered azulene ring system, methyls at 1 and 4, isopropyl at 7. Planar and achiral; uneven electron density gives a small S0–S1 gap and the intense blue colour. From guaiac wood and chamomile oils, lower-cost than parent azulene and the usual entry to azulene chemistry. NorrChemica, DDP. CoA and SDS provided.

      Guaiazulene | CAS 489-84-9 | ≥97%

      GuaiazuleneCAS 489-84-9 · ≥97%

      Regular price From €24,20 (incl. VAT)
      Regular price Sale price From €24,20 (incl. VAT)
    • Chemical structure of N1-Methylpseudouridine (1-methylpseudouridine, m1Ψ, C₁₀H₁₄N₂O₆), CAS 13860-38-3, ≥97% — C-nucleoside with the ribose bound to C5 of 1-methyluracil. A natural modification of archaeal tRNA and the uridine replacement in the COVID-19 mRNA vaccines, used in modified-mRNA research for higher protein expression and lower innate immunogenicity, and in studies of transcription and translation fidelity. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      N1-Methylpseudouridine | CAS 13860-38-3 | ≥97%

      N1-MethylpseudouridineCAS 13860-38-3 · ≥97%

      Regular price From €45,20 (incl. VAT)
      Regular price Sale price From €45,20 (incl. VAT)
    • Chemical structure of Thiazolyl Blue Tetrazolium Bromide (MTT, C₁₈H₁₆BrN₅S), CAS 298-93-1, ≥98% — a tetrazolium salt used in colorimetric assays of mammalian cell survival, proliferation and cytotoxicity. The assay detects living but not dead cells, and the result is read on a multiwell spectrophotometer (ELISA reader). Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Thiazolyl Blue Tetrazolium Bromide (MTT) | CAS 298-93-1 | ≥98%

      Thiazolyl Blue Tetrazolium Bromide (MTT)CAS 298-93-1 · ≥98%

      Regular price From €49,20 (incl. VAT)
      Regular price Sale price From €49,20 (incl. VAT)
    • Chemical structure of Coomassie Brilliant Blue G-250, CAS 6104-58-1, Biological Stain grade — triphenylmethane anionic dye (C.I. 42655 / Acid Blue 90) used as a quantitative protein-binding dye in the Bradford protein assay for spectrophotometric protein quantification, Blue Native PAGE membrane protein complex analysis, and electrophoretic protein staining methodology in biochemistry and molecular biology research. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Coomassie Brilliant Blue G-250 | CAS 6104-58-1 | Biological Stain grade

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      Coomassie Brilliant Blue G-250CAS 6104-58-1 · Biological Stain grade

      Regular price From €49,20 (incl. VAT)
      Regular price €178,80 Sale price From €49,20 (incl. VAT)
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    • Chemical structure of N1-Methylthymine, CAS 4160-72-9, ≥95% — N1-methylated thymine derivative used in nucleobase chemistry and as a precursor for selective N3-functionalisation of the pyrimidine-2,4-dione ring. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.provided.

      N1-Methylthymine | CAS 4160-72-9 | ≥95%

      N1-MethylthymineCAS 4160-72-9 · ≥95%

      Regular price From €37,00 (incl. VAT)
      Regular price Sale price From €37,00 (incl. VAT)
    • Chemical structure of Methyltetrazine-amine hydrochloride, CAS 1596117-29-1, ≥97% — 4-(6-methyl-1,2,4,5-tetrazin-3-yl)benzylamine hydrochloride, a methyltetrazine building block for bioorthogonal inverse-electron-demand Diels–Alder (tetrazine) ligation whose free amine is coupled to carboxylic acids and activated esters. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Methyltetrazine-amine HCl | CAS 1596117-29-1 | ≥97%

      Methyltetrazine-amine HClCAS 1596117-29-1 · ≥97%

      Regular price From €179,20 (incl. VAT)
      Regular price Sale price From €179,20 (incl. VAT)
    • Chemical structure of Meldrum's acid (2,2-dimethyl-1,3-dioxane-4,6-dione), CAS 2033-24-1, 98% — cyclic malonic acid diester with unusually high C–H acidity, used as a malonate equivalent for C–C bond formation and as a precursor to acylketenes on thermolysis for acylation and heterocycle synthesis. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Meldrum's Acid | CAS 2033-24-1 | ≥98%

      Meldrum's AcidCAS 2033-24-1 · ≥98%

      Regular price From €45,00 (incl. VAT)
      Regular price Sale price From €45,00 (incl. VAT)
    • Chemical structure of 4-Methylumbelliferone, CAS 90-33-5, ≥98% — 7-hydroxy-4-methyl-2H-chromen-2-one (4-MU), a pH-sensitive blue-fluorescent coumarin and the fluorogenic aglycone released by glycosidase, sulfatase and phosphatase substrates, also a hyaluronan-synthase inhibitor in cell biology. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      4-Methylumbelliferone | CAS 90-33-5 | ≥98%

      4-MethylumbelliferoneCAS 90-33-5 · ≥98%

      Regular price From €29,90 (incl. VAT)
      Regular price Sale price From €29,90 (incl. VAT)
    • Chemical structure of 9-Mesityl-10-methylacridinium tetrafluoroborate (Mes-Acr-Me BF4), CAS 1442433-71-7, ≥97% — an organic, metal-free photoredox catalyst (C23H22BF4N): a 10-methylacridinium cation bearing a 9-mesityl (2,4,6-trimethylphenyl) group. On visible-light excitation it reaches a strongly oxidizing excited state for single-electron photooxidation. Popularized by Nicewicz, it drives anti-Markovnikov hydroamination and carboxylic-acid addition to alkenes. Supplied by NorrChemica with DDP shipping.

      Mes-Acr-Me BF4 | CAS 1442433-71-7 | ≥97%

      Mes-Acr-Me BF4CAS 1442433-71-7 · ≥97%

      Regular price From €79,20 (incl. VAT)
      Regular price Sale price From €79,20 (incl. VAT)
    • Chemical structure of Bromothymol Blue, CAS 76-59-5, ≥99% — sulfonephthalein pH indicator dye (C.I. 26635) with yellow-to-blue color transition at pH 6.0–7.6 used as a research-grade indicator for near-physiological pH monitoring in cell culture, acid-base titration endpoint detection in analytical chemistry, CO₂ visualization in photosynthesis and respiration methodology, and pH determination in microbiological and aquatic research. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Bromothymol Blue | CAS 76-59-5 | ≥99%

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      Bromothymol BlueCAS 76-59-5 · ≥99%

      Regular price From €22,90 (incl. VAT)
      Regular price €69,90 Sale price From €22,90 (incl. VAT)
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    • Chemical structure of Rose Bengal Sodium Salt, CAS 632-69-9, dye content ≥80% — halogenated xanthene dye widely used as a singlet oxygen photosensitiser in photochemistry, photoredox catalysis, and visible-light-driven organic reactions, and as a histological and cytological staining reagent. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.​​​​​​​​​​​​​​​​

      Rose Bengal Sodium | CAS 632-69-9 | Dye Content ≥80%

      Rose Bengal SodiumCAS 632-69-9 · Dye Content ≥80%

      Regular price From €44,80 (incl. VAT)
      Regular price Sale price From €44,80 (incl. VAT)
    • Chemical structure of Basic Fuchsin (C.I. Basic Violet 14), CAS 632-99-5 — magenta cationic triarylmethane dye, a mixture of rosaniline, pararosaniline and new fuchsine homologues. Used as a histological/microbiological stain: the chromogen of carbol fuchsin for Ziehl–Neelsen acid-fast staining of mycobacteria, precursor to Schiff reagent for Feulgen and PAS reactions, and the basis of aldehyde-fuchsin and Gram counterstains. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Basic Fuchsin (Indicator pH 1.0–3.1) | CAS 632-99-5 | Reagent Grade

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      Basic Fuchsin (Indicator pH 1.0–3.1)CAS 632-99-5 · Reagent Grade

      Regular price From €49,90 (incl. VAT)
      Regular price €79,20 Sale price From €49,90 (incl. VAT)
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    • Chemical structure of Coumarin 1 (7-Diethylamino-4-methylcoumarin), CAS 91-44-1, ≥98% — blue-emitting laser dye and fluorescent probe widely used in dye lasers, fluorescence microscopy, and as a tunable emitter in OLED and photonics research. Supplied by NorrChemica with DDP shipping. CoA and SDS provided.

      Coumarin 1 | CAS 91-44-1 | ≥98%

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      Coumarin 1CAS 91-44-1 · ≥98%

      Regular price From €34,20 (incl. VAT)
      Regular price €38,90 Sale price From €34,20 (incl. VAT)
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    • Six staining solutions in bottles, hematoxylin, alcian blue, trypan blue, methylene blue, crystal violet and resazurin, each with the fault that most often stops it working. NorrChemica Lab Journal.

      Why a staining solution stops working: hematoxy...

      October 21, 2026
      Blog

      Why a staining solution stops working: hematoxy...

      October 21, 2026
      Blog
    • Cover: a powder bottle labelled dye content ≥85 %, a balance with dye powder in a weighing boat, and a volumetric flask of the dye solution.

      Dye content on the label: why a stain at 85% is...

      October 15, 2026
      Blog

      Dye content on the label: why a stain at 85% is...

      October 15, 2026
      Blog
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