Dibutyltin dilaurate

N-Acetyl-L-tyrosine paramete

CAS No.: 537-55-3
MF: C11H13NO4
Place of Origin: Shandong, China
Grade Standard: Medicine Grade
Brand Name: Lookchemical
Purity: 99%min
Molecular formula:: C11H13NO4
Appearance and traits:: white powder
Melting point:: 149-152 °C(lit.)
Refractive index:: 275.1 °C
Other Names: 223.22500
EINECS No.: 208-671-3
Type: Other
Usage: Animal Pharmaceuticals
Model Number: CAS 537-55-3
CAS Number:: 537-55-3
Molecular weight:: 223.22500
Density:: 1.304 g/cm3
Boiling point:: 531.3 °C at 760 mmHg






White crystals or crystalline powder

Specific Rotation[]D20

+46.5 to +49.0

State of solution

Clear and colorless

Not less than 96.0%

Chloride (Cl)

Not more than 0.020%

Ammonium (NH4)

Not more than 0.02%

Sulfate (SO4)

Not more than 0.020%

Iron (Fe)

Not more than 30ppm

Heavy Metals (Pb)

Not more than 10ppm

Aresenic (As2O3)

Not more than 2ppm

Loss on drying

Not more than 0.5%

Residue on ignition

Not more than 0.1%


99.0% to 101.0%


Not more than 1.0%


2.0 to 3.0


Used in the medical industry

Product service

1. Certificate Of Analysis (COA)

2. Material Safety Data Sheet (MSDS)

3. Route of synthesis (ROS)

4. Method of Aanlysis (MOA)

5. Nuclear Magnetic Resonance (NMR)

6. Packing pictures and loading video before loading

7. Free Sample

8. Factory audit


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Q1: Do you accept sample order?
A:  We will make samples before mass production, and after sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
Q2:  What is our advantage?
A : The series of natural extracted product are all self-developed, produced and tested. Mature production technology, strict cost control, and perfect quality assurance system, ensure the product stability and competitive price.
Q3: What’s your MOQ?
A :  Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q4: Do you supply product report?
A : Yes. We'll give you product analysis report before shipping.
 Q5: Is there a discount?
A :  Different quantity has different discount.
Q6: Can we visit your factory?
A :  Yes. Welcome to visit.
Q7: How to confirm the Product Quality before placing orders?
A :  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.


H318 (99.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation]




1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.


1 kg/bag/drum

Packing can be conducted according to customers' requirements.

Delivery detail

   [Delivery] 5 working days after payment.

N-Acetyl-L-tyrosine picture

Packaging and shipping

Honor Certificate

Professional team