Methylene blue

CAS Registry Number®

61-73-4
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CAS Name

Methylene blue

Molecular Formula

C16H18N3S.Cl

Cite this Page

Methylene blue.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=61-73-4 (retrieved 2021-10-19) (CAS RN: 61-73-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    100-110 °C (decomp)
  • Density (2)

    1.31 g/cm3

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C16H18N3S.ClH/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13;/h5-10H,1-4H3;1H/q+1;/p-1

InChIKey

InChIKey=CXKWCBBOMKCUKX-UHFFFAOYSA-M

SMILES

N(C)(C)C1=CC2=C(N=C3C(=[S+]2)C=C(N(C)C)C=C3)C=C1.[Cl-]

Canonical SMILES

[Cl-].N=1C2=CC=C(C=C2[S+]=C3C=C(C=CC13)N(C)C)N(C)C

Other Names for this Substance

  • Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride (1:1)
  • C.I. Basic Blue 9
  • Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride
  • C.I. 52015
  • Aizen Methylene Blue FZ

Deleted or Replaced CAS Registry Numbers

97130-83-1, 105504-42-5, 121067-62-7, 1341-90-8, 6476-03-5, 12262-49-6, 167498-52-4, 923927-02-0, 1001913-24-1, 1001914-35-7, 1219638-11-5