Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

L(-)-Tryptophan ≥99%

Supplier: Alfa Aesar

Purity: 99%
CAS No.: 73-22-3
Molecular Formula: C11H12N2O2
Formula Weight: 204.23
Melting Point: 280° 285°
Beilstein Reference: 86197
Merck Reference: 14,9797
Optical Rotation: -31° (c=1 in water)
MDL No.: MFCD00064340

Formula: C₁₁H₁₂N₂O₂
MW: 204,23 g/mol
Melting Pt: 290 °C
Density: 1,34 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00064340
CAS Number: 73-22-3
EINECS: 200-795-6
Merck Index: 12,09929

Log in to see your contract pricing and availability.
  Remember me on this device


Expand All / Collapse All
Pack type Pk VWR Catalog Number Quantity
Glass bottle for solids 100 g ALFAA10230.22
Supplier Article Number:: A10230.22
Glass bottle for solids 500 g ALFAA10230.36
Supplier Article Number:: A10230.36
Glass bottle for solids 25 g ALFAA10230.14
Supplier Article Number:: A10230.14
Expand All / Collapse All


Melting point 280° 285°
Formula weight 204.23
CAS No. 73-22-3
Purity 99%
Molecular formula C11H12N2O2
MDL No. MFCD00064340
Optical rotation -31° (c=1 in water)
Merck reference 14,9797
Beilstein reference 86197
Physical form Powder
Appearance White to off-white
Enter Details

Select the article for which you are looking for Certificate

Indicate the Lot Number. This field is mandatory.

Enter Certificate Details

Enter the Lot number:

Choose from recent batch/lot numbers:

Review & Compare Alternatives
We found alternative products that can save you up to  per item-unit.  To compare product details, select up to 3 alternatives below and click Compare Selected. To add items to your basket, enter a quantity and click Add to Basket.

Original Product:

Description Catalog Number Availability Unit Your Price Price Per Qty