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D-(+)-Tryptophan (CAS# 153-94-6) Featured Image
  • D-(+)-Tryptophan (CAS# 153-94-6) 1

D-(+)-Tryptophan (CAS# 153-94-6)

Chemical Property:

Molecular Formula C11H12N2O2
Molar Mass 204.23
Density 1.1754 (rough estimate)
Melting Point 282-285°C (dec.)(lit.)
Boling Point 342.72°C (rough estimate)
Specific Rotation(α) 31.5 º (c=1, H2O 24 ºC)
Flash Point 195.4°C
Water Solubility 11 g/L (20 ºC)
Solubility Soluble in hot ethanol, alkaline solution and water, insoluble in chloroform, the aqueous solution is weakly acidic.
Vapor Presure 4.27E-07mmHg at 25°C
Appearance White or white-like crystalline powder
Color White to slightly yellow
BRN 86198
pKa 2.30±0.10(Predicted)
Storage Condition Keep in dark place,Inert atmosphere,Room temperature
Stability Stable. Incompatible with oxidizing agents.
Refractive Index 31 ° (C=1, H2O)
MDL MFCD00005647
Physical and Chemical Properties melting point 282-285 ℃
specific optical rotation 31.5 ° (c = 1, H2O 24 ℃)
water-soluble 11g/L (20 ℃)
Use Is an important nutritional agent, used in medicine as a control agent for the disease

Product Detail

Product Tags

Risk and Safety

Hazard Symbols Xi – Irritant
Risk Codes R36/37/38 – Irritating to eyes, respiratory system and skin.
R41 – Risk of serious damage to eyes
R37/38 – Irritating to respiratory system and skin.
R22 – Harmful if swallowed
Safety Description S24/25 – Avoid contact with skin and eyes.
S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection.
S36 – Wear suitable protective clothing.
S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany 3
RTECS YN6129000
FLUKA BRAND F CODES 8
TSCA Yes
HS Code 29339990
Hazard Class IRRITANT

Reference

Reference

Show more
 1. Gan Huiyu Huanglu. Preparation and Application of L-Proline Modified Gold Nanochannels [J]. Journal of Minjiang Unive…

 

Standard

Authoritative Data Verified Data

This product is L-2-amino -3(B-indole) propionic acid. Calculated as dried product, the content of C11H12N202 shall not be less than 99.0%.

Trait

Authoritative Data Verified Data
  • This product is white to yellowish crystal or crystalline powder; Odorless.
  • This product is slightly soluble in water, very slightly soluble in ethanol, insoluble in chloroform, soluble in formic acid; Dissolved in sodium hydroxide test solution or dilute hydrochloric acid.

specific rotation

take this product, precision weighing, add water to dissolve and quantitatively dilute to make a solution containing about 10mg per lml, and determine according to law (General rule 0621), the specific rotation was -30.0 ° to -32.5 °.

Introduction

is an unnatural isomer of tryptophan

Differential diagnosis

Authoritative Data Verified Data
  1. appropriate amounts of the product and the tryptophan reference product were dissolved in water and diluted to prepare a solution containing about 10mg per 1 ml as the test solution and the reference solution. According to the chromatographic condition test under other amino acids, the position and color of the main spot of the test solution should be the same as that of the reference solution.
  2. The infrared absorption spectrum of this product should be consistent with that of the control (Spectrum set 946).
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