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  4. Rhodamine B hydrazide

Rhodamine B hydrazide is a good probe for sulfite, with colorless and non-fluorescent properties. While the emission is related to the concentration of sulfite (5-800 ng/mL; detection limit=1.4 ng/mL (3σ)). Sulfite reduces dissolved oxygen to yield superoxide radicals, which binds to Rhodamine B hydrazide to form Rhodamine B. Rhodamine B hydrazide gives Rhodamine B-like fluorescence in the presence of sulfite, which is enhanced by Tween 80 surfactant micelles. Rhodamine B hydrazide has an absorption maximum at 554 nm and a fluorescence emission maximum at 574 nm.

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Rhodamine B hydrazide Chemical Structure

Rhodamine B hydrazide Chemical Structure

CAS No. : 74317-53-6

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Description

Rhodamine B hydrazide is a good probe for sulfite, with colorless and non-fluorescent properties. While the emission is related to the concentration of sulfite (5-800 ng/mL; detection limit=1.4 ng/mL (3σ)). Sulfite reduces dissolved oxygen to yield superoxide radicals, which binds to Rhodamine B hydrazide to form Rhodamine B. Rhodamine B hydrazide gives Rhodamine B-like fluorescence in the presence of sulfite, which is enhanced by Tween 80 surfactant micelles. Rhodamine B hydrazide has an absorption maximum at 554 nm and a fluorescence emission maximum at 574 nm[1].

Molecular Weight

456.58

Formula

C28H32N4O2
CAS No.
Appearance

Solid

Color

Off-white to yellow

SMILES

CCN(C1=CC2=C(C3(C4=CC=C(C=C4O2)N(CC)CC)C5=C(C(N3N)=O)C=CC=C5)C=C1)CC
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, protect from light

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

Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (219.02 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.1902 mL 10.9510 mL 21.9020 mL
5 mM 0.4380 mL 2.1902 mL 4.3804 mL
View the Complete Stock Solution Preparation Table

* 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.

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Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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This equation is commonly abbreviated as: C1V1 = C2V2

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In Vivo Dissolution Calculator
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Working solution concentration: mg/mL
Purity & Documentation
References

Complete Stock Solution Preparation Table

* 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.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.1902 mL 10.9510 mL 21.9020 mL 54.7549 mL
5 mM 0.4380 mL 2.1902 mL 4.3804 mL 10.9510 mL
10 mM 0.2190 mL 1.0951 mL 2.1902 mL 5.4755 mL
15 mM 0.1460 mL 0.7301 mL 1.4601 mL 3.6503 mL
20 mM 0.1095 mL 0.5475 mL 1.0951 mL 2.7377 mL
25 mM 0.0876 mL 0.4380 mL 0.8761 mL 2.1902 mL
30 mM 0.0730 mL 0.3650 mL 0.7301 mL 1.8252 mL
40 mM 0.0548 mL 0.2738 mL 0.5475 mL 1.3689 mL
50 mM 0.0438 mL 0.2190 mL 0.4380 mL 1.0951 mL
60 mM 0.0365 mL 0.1825 mL 0.3650 mL 0.9126 mL
80 mM 0.0274 mL 0.1369 mL 0.2738 mL 0.6844 mL
100 mM 0.0219 mL 0.1095 mL 0.2190 mL 0.5475 mL
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Rhodamine B hydrazide Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Rhodamine B hydrazide74317-53-6Fluorescent DyeInhibitorinhibitorinhibit

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