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P-Rosolic Acid Powder CAS 603-45-2

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P-Rosolic Acid Powder CAS 603-45-2

P-Rosolic Acid Powder CAS 603-45-2
P-Rosolic Acid Powder CAS 603-45-2 P-Rosolic Acid Powder CAS 603-45-2

Large Image :  P-Rosolic Acid Powder CAS 603-45-2

Product Details:
Place of Origin: China
Brand Name: YunbangPharm
Certification: ISO9001
Model Number: YB085
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: 1kg/Bottle, 5-25kg/Drum
Delivery Time: 5-8 working days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 10Ton/Month

P-Rosolic Acid Powder CAS 603-45-2

Product Name: P-Rosolic Acid Cas No: 603-45-2
Molecular Formula: C19H14O3 EINECS: 210-041-8
Form: Powder Technique: Titration: Suitable
Colour: Red-brown To Brownish-red Storage Temp.: Room Temp
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P-Rosolic Acid Powder


603-45-2 Biological Buffers


P-Rosolic Acid Powder 603-45-2

p-Rosolic acid powder CAS 603-45-2

1:Can I get some samples before bulk order?
A: Most products provide free samples, but the shipping cost be paid by customers.
2: What's your MOQ?
A: We can have a discussion.
3: Which kind of payment terms do you accept?
A: PI will be sent first after confirmation of order,enclosed our bank information.Payment by T/T, Western Union,D/P, ETC.
4.How to place an order?
A: You can contact me through Trademanager, WhatsApp, Email and other contact methods, tell me the product and quantity you need, and then we will give you a quote.
5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.

1. 90days quality guarantee for exchange.
2. For each batch order extracts, we will attach a factory Inspection Report with the goods delivery , including the BatchNo/ Date/ Test index ects; also will keep the archived extracts to ensure received by customers are the same each time.
3. Our team of experienced professionals are available online 24 hours a day to answer any questions and provide guidance on product usage and maintenance.


Synonyms:4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone, Aurin;4,4'-Dihydroxyfuchsone;Corallin Spirit Soluble;Spirit Aurin;Rosolic acid (CI x 43800);4-(p,p′-Dihydroxybenzhydrylidine)-2,5-cyclohexadien-1-one;Corallin Aurin p-Rosolic Acid;Rosolic aci
Product Categories:Piperidines ,Homopiperidines;Indicator (pH);Miscellaneous Natural Products;Analytical Chemistry;pH Indicators;Triphenylmethane
Mol File:603-45-2.mol
Melting point309°C (decompose)
Boiling point372.4°C (rough estimate)
density1.2497 (rough estimate)
refractive index1.4200 (estimate)
storage temp.Store at room temperature.
solubilityPractically insoluble in water, benzene; freely soluble in ethanol
formCrystalline Powder
Colour Index43800
pka6.98(at 25℃)
colorRed-brown to brownish-red
PH Range6.8(YELLOW)--8.2(RED)
Water SolubilitySoluble in alcohol, sodium hydroxide, potassium hydroxide and strong acids. Insoluble in water.
λmax534.6nm, 479.5nm, 482nm
Stability:Stable. Incompatible with strong oxidizing agents.
Major Applicationelectrorheological materials, films patterning, antireflective coatings, thermochromic materials, photoresists, film patterning, recording materials, lithium battery, semiconductors, printing materials, inks, corrosion inhibitors, adhesives, drugs, detecting viable cells, treatment of Alzheimer’s disease
CAS DataBase Reference603-45-2
EPA Substance Registry System2,5-Cyclohexadien-1-one, 4-[bis(4-hydroxyphenyl)methylene]- (603-45-2)
Chemical Propertiesred crystals or powder
Usesactivates heme oxygenase, anti-oxidative stress, inhibits DNA fragmentation
UsesA red coloring medium made from phenol or carbolic acid. It is soluble in alcohol and ether but insoluble in water. When fabrics were steeped in this solution, the color was nonactinic and therefore safe for darkrooms, windows, and doorways. Aurin was also mixed with water-soluble gums and brushed on the backs of collodion and silver bromide gelatin plates as an antihalation layer.
UsesRosolic acid is used as a pH indicator in the range from 5.0 to 6.8. It acts as an intermediate in the manufacturing dyes. It is involved in the activation of heme oxygenase and in the inhibition of DNA fragmentation. It finds application in the selective isolation of coliform bacteria.
DefinitionChEBI: Aurin is a diarylmethane.
Purification MethodsIt forms green crystals with a metallic luster, but the colour depends on the solvent used. When recrystallised from brine (saturated aqueous NaCl) acidified with HCl, it forms red needles, but when recrystallised from EtO/AcOH, the crystals have a beetle iridescent green colour. It has been recrystallised from Me2CO (although it dissolves slowly), methyl ethyl ketone, 80-95% AcOH and from AcOH/*C6H6. An aqueous KOH solution is golden yellow, and a 70% H2SO4 solution is deep red in colour. An alternative purification is to dissolve this triphenylmethane dye in 1.5% of aqueous NH3, filter, and heat to 70-80o, then acidify with dilute AcOH by adding it slowly with vigorous stirring, whereby the aurin separates as a brick-red powder or as purplish crystals depending on the temperature and period of heating. Filter off the solid, wash it with H2O and a little dilute AcOH, then H2O again. Stir this solid with Et2O to remove any ketones and allow it to stand overnight in the Et2O, then filter and dry it in air then in a vacuum. [Gomberg & Snow J Am Chem Soc 47 202 1925, Baines & Driver J Chem Soc 123 1216 1923, UV: Burawoy Chem Ber 64 462 1941, Beilstein 8 IV 2646.]
P-Rosolic Acid Powder CAS 603-45-2 1
P-Rosolic Acid Powder CAS 603-45-2 2
P-Rosolic Acid Powder CAS 603-45-2 3
P-Rosolic Acid Powder CAS 603-45-2 4

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