Acid blue 1 free acid  (Synonyms: Xylene blue free acid; C.I. Acid blue 1 free acid)

Acid blue 1 free acid (Patent Blue V) is a novel biological dye that can be used as an intraocular dye for retinectomy. Retinectomy refers to the removal of the translucent inner limiting membrane (ILM). The application of appropriate dyes in vitreoretinal surgery can achieve the purpose of complete removal. Acid blue 1 free acid can be used to stain retinal premembranous structures. Spectral analysis shows that Acid blue 1 free acid has strong absorption below 450 nm and above 600 nm, showing a blue-green color. Acid blue 1 free acid is also used as a marker in lymphangiography for resection of neoplastic lymph nodes^[1][2].

544.68

C₂₇H₃₂N₂O₆S₂

116-95-0

Solid

Green to dark green

CC/[N+](CC)=C1C=C/C(C=C/1)=C(C2=CC=C(N(CC)CC)C=C2)\C3=CC=C(S(=O)([O-])=O)C=C3S(=O)(O)=O

Room temperature in continental US; may vary elsewhere.

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

• [1]. Mennel S, et al. Patent blue: a novel vital dye in vitreoretinal surgery. Ophthalmologica. 2006;220(3):190-3.  [Content Brief]

  [2]. Barranger E, et al. Laparoscopic sentinel lymph node procedure using a combination of patent blue and radioisotope in women with cervical carcinoma. Cancer. 2003 Jun 15;97(12):3003-9.  [Content Brief]