Molekula
Janus green B (C.I. 11050)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Janus green B (C.I. 11050) is a phenazinium (safranine-based) azo dye with applications in biology and medicine, primarily used as a supravital stain for mitochondria in living cells. It binds selectively to cellular components, aiding in microscopic examination and viability assays. This chemical has a CAS number of 2869-83-2, molecular formula C30H31ClN6, and a molecular weight of 511.06 g/mol. It is stable at ambient storage conditions and carries no signal word for hazard classification.
Molekula supplies Janus green B (C.I. 11050) in 5 g packs, from £66.72 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £55.60 per pack ex VAT · £66.72 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark green or dark blue to black |
| Loss on Drying | ≤10% |
| Specific absorbance | (E 1% / 1cm): 728 (@649nm in 50:50) |
| Dye Content | ≥65.0% |
| Lambda max | 650 ± 10nm (methanol) |
| Solubility in methanol | Blue solution (0.1% in 50:50 methanol: water) |
| Extinction coefficient (at A1) | ≥28000 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 58328236 |
| CAS Number | 2869-83-2 |
| IUPAC Name | 8-[[4-(dimethylamino)phenyl]diazenyl]-N,N-diethyl-10-phenylphenazin-10-ium-2-amine chloride |
| EC Number | 220-695-6 |
| Molecular Formula | C30H31ClN6 |
| Molecular Weight | 511.06 |
| Exact Mass | 510.2299 |
| SMILES | CCN(CC)C1=CC2=[N+](C3=C(C=CC(=C3)N=NC4=CC=C(C=C4)N(C)C)N=C2C=C1)C5=CC=CC=C5.[Cl-] |
| InChIKey | XXACTDWGHQXLGW-UHFFFAOYSA-M |
| InChI | InChI=1S/C30H31N6.ClH/c1-5-35(6-2)26-17-19-28-30(21-26)36(25-10-8-7-9-11-25)29-20-23(14-18-27(29)31-28)33-32-22-12-15-24(16-13-22)34(3)4;/h7-21H,5-6H2,1-4H3;1H/q+1;/p-1 |
| PubChem CID | 76123 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 3212900050 |
| Tariff Code | 3212900000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 3-(Diethylamino)-7-((4-(dimethylamino)phenyl)azo)-5-phenylphenazinium chloride
- 3-(Diethylamino)-7-((p-(dimethylamino)phenyl)azo)-5-phenylphenazinium chloride
- C.I. 11050
- C30H31ClN6
- Diazin Green S
- Janus green B
- Janus Green B Certified
- Janus Green B chloride
- Janus Green V
- Union Green B
Frequently asked questions
What is Janus green B (C.I. 11050) used for?
Janus green B is primarily used as a supravital stain for mitochondria in living cells, as well as in cytological studies.
What is the chemical formula and molecular weight of Janus green B?
The chemical formula is C₃₀H₃₁ClN₆, and the molecular weight is 511.06 g/mol.
How should Janus green B be stored?
Store at ambient temperature in a tightly sealed container, away from direct light and moisture.
What grades or purities of Janus green B does Molekula supply?
Molekula supplies Janus green B with a dye content of ≥65.0%, suitable for laboratory and research applications.
Can Molekula supply Janus green B in bulk quantities?
Yes, Molekula can provide Janus green B in bulk, with quantities tailored to your specific requirements—please contact us for pricing and lead times.
What documentation comes with an order of Janus green B?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Where can I buy Janus green B (C.I. 11050)?
Directly from Molekula, which lists Janus green B (C.I. 11050) in 5 g packs from £66.72 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.