CAS 581-64-6: Thionine
Description:Thionine, with the CAS number 581-64-6, is a synthetic organic compound belonging to the class of thiazine dyes. It is characterized by its vibrant blue color, which makes it useful in various applications, including biological staining and as a redox indicator in analytical chemistry. Thionine is soluble in water and exhibits a strong affinity for nucleic acids, allowing it to bind effectively to DNA and RNA, which is particularly valuable in histological and cytological studies. The compound has a relatively low toxicity profile, but safety precautions should still be observed during handling. Its chemical structure features a thiazine ring, contributing to its unique optical properties. Thionine can undergo oxidation and reduction reactions, making it useful in electrochemical applications. Additionally, it has been studied for its potential applications in photodynamic therapy due to its ability to generate reactive oxygen species upon light activation. Overall, thionine is a versatile compound with significant utility in both research and industrial contexts.
Formula:C12H10N3S·Cl
InChI:InChI=1S/C12H10N3S.ClH/c13-7-1-3-9-11(5-7)16-12-6-8(14)2-4-10(12)15-9;/h1-6H,13-14H2;1H/q+1;/p-1
InChI key:InChIKey=ANRHNWWPFJCPAZ-UHFFFAOYSA-M
SMILES:[Cl-].N=1C2=CC=C(N)C=C2[S+]=C3C=C(N)C=CC13
- Synonyms:
- (2Z,4Z,6Z,8Z)-thionine
- (3E)-3-imino-3H-phenothiazin-7-amine
- 3,7-Diamino-5λ4-phenothiazin-5-ylium chloride
- 3,7-Diaminophenazathionium chloride
- 3,7-Diaminophenothiazin-5-Ium Chloride
- 3,7-Diaminophenothiazin-5-iumchlorid
- 3,7-Diaminophenothiazin-5-iumchloride
- 3H-phenothiazine-3,7-diamine
- 7-amino-3H-phenothiazin-3-iminium
- 7-amino-3H-phenothiazin-3-iminium chloride
- See more synonyms
- Chlorure De 3,7-Diaminophenothiazine-5-Ium
- Chlorure de 3,7-diaminophenothiazin-5-ium
- Cloruro De 3,7-Diaminofenotiazin-5-Io
- Cyanine
- Katalysin
- Lauth's violet
- Phenothiazin-5-ium, 3,7-diamino-, chloride
- Phenothiazin-5-ium, 3,7-diamino-, chloride (1:1)
- Thionin
- Thionin (dye)
- Thionin chloride
- Thionine chloride
- C.I. 52000
Brand | Product data | Purity | Price range | Estimated delivery |
---|---|---|---|---|
![]() | Thionine Chloride REF: 7W-GT6129CAS: 581-64-6 | - - - | To inquire | Wed 16 Apr 25 |
![]() | Thionine chloride REF: 3D-FT59508CAS: 581-64-6 | Min. 95% | - - - | Discontinued product |

Thionine chloride
Ref: 3D-FT59508
1g | Discontinued | Request information | |
2g | Discontinued | Request information | |
5g | Discontinued | Request information | |
10g | Discontinued | Request information | |
25g | Discontinued | Request information | |
100mg | Discontinued | Request information | |
250mg | Discontinued | Request information | |
500mg | Discontinued | Request information |