Pharmaceutical Drug, 3- (4-Hydroxyphenyl) -D-Alanine, CAS: 556-02-5

• Customization: Available
• CAS No.: 556-02-5
• Formula: C9h11no3
• Model NO.: Amino acid
• Environmental Protection: No
• Certification: REACH
• Classification: Amino Acid
• Function: Keeping Health and Promoting Growth
• Appearance: Powder
• Name: 3-(4-Hydroxyphenyl)-D-Alanine
• CAS: 556-02-5
• Molecular Weight: 181.19
• Melting Point: >300 °c(Lit.)
• Boiling Point: 385.2 °c at 760 Mmhg
• Flash Point: 186.7 °c
• Transport Package: 25kg/Drum
• Trademark: SWC
• Origin: China
• Production Capacity: 20kg/Month

Product Description

Product Name: 3-(4-Hydroxyphenyl)-D-alanine                  
CAS No.: 556-02-5

Formula: C9H11NO3
Synonyms: (R)-3-(p-Hydroxyphenyl)alanine;D-Tyrosin;(R)-2-Amino-3-(p-hydroxyphenyl)propionic acid;H-D-Tyr-OH;D-Tyrosine(556-02-5);

Usage:
D-Tyrosine, the stereoisomer to L-Tyrosine (T899975), is an amino acid used in various organic
syntheses for antibiotics. It is used in the synthesis of (-)-anisomycin, as well as BATSI (boronic acid transition state inhibitors) which act on β-lactamases. It has also been studied as an inhibitor of microbial growth on surfaces, reducing microbial attachment to hydrophillic glass and hydrophobic po lypropylene surfaces.

Item	Standard	Analysis data
Appearance	White crystals or crystalline powder	Conforms
Specific rotation[α]20/D (C=5,1mol/L HCL)	+11.0 to +12.1°	+11.4°
State of solution (Transmittance)	Clear and colorless Not less than 95.0%	96.0%
Chloride (Cl)	Not more than 0.020%	<0.020%
Ammonium (NH4)	Not more than 0.02%	<0.020%
Sulfate (SO4)	Not more than 0.020%	<0.020%
Iron (Fe)	Not more than 20ppm	<20ppm
Heavy metal(Pb)	Not more than 10ppm	<10ppm
Arsenic(As2O3)	Not more than 1ppm	<1ppm
Other amino acids	Chromatographically Not detectable	Conforms
Loss on drying	Not more than 0.20%	0.15%
Residue on ignition(sulfated)	Not more than 0.20%	0.1%
Assay	98.5 to102.0%	99.7%
pH	5.0 to 6.5	5.8

Frequently Asked Questions

Q1: May I get one sample before placing order? 

Re: Yes, Sample are available. For normal products, samples are for free and you just need to bear the freight; 

For those high value products, you just need to freight and certain product cost. When we both cooperate for 

some times or when you are our VIP customer, free sample will be offered when you need.

Q2: Which payment is available for your company?
Re: T/T, L/C. You can choose the one which is convenient for you. 

Q3: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT etc.) 

or by air. Usually it will cost 3-5days that you can get the goods after delivery.For large quantity products,

shipping by see is worthwhile.It will cost days to weeks to come to your destination port, which depends on 

where the port is.

Q4: Is there any possible to use my appointed label or package?
Re: Yes. If needed, we'd like to use label or package according to your requirement. 

Q5: How can you guarantee the goods you offer is qualified? 
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide 

for you all are qualified. We will have goods tested and provide COA before delivery for sure.