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L(-)-Tryptophan 98.5-101.5% (dried basis) USP, Multi-Compendial, J.T.Baker®
 :  AVANTOR PERFORMANCE MATERIALS US
    
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L(-)-Tryptophan 98.5-101.5% (dried basis) USP, Multi-Compendial, J.T.Baker®
 :  AVANTOR PERFORMANCE MATERIALS US
    
 
Restricted Products: To process your orders without delay, please provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide ID that includes your business name & shipping address via email [email protected] or fax 484.881.5997 referencing your VWR account number. Acceptable forms of ID are:

  • • State issued document with your organization's Federal Tax ID Number
  • • State issued document with your organization's Resale Tax ID Number
  • • City or County issued Business License
  • • State Department of Health Services License
  • • Any other ID issued by the State that includes the business name & address

* ATTN: California Customers may require additional documentation as part of the CA Health & Safety Code. Products that fall under this regulation will be placed on a mandatory 21-day hold after documentation is received. Avantor will not lift restrictions for residential shipping addresses.

 

  • Environmentally Preferable:

 

 

  • USP - Assay (C₁₁H₁₂N₂O₂) (dried basis):
    98.5 - 101.5 %
  • USP - Identification:
    Passes Test
  • USP - Specific Rotation [Å]²⁵ ^D:
    -32.8 - -29.4 Degree
  • USP - pH:
    5.5 - 7.0
  • USP - Loss on Drying at 105°C:
    ≤0.3 %
  • USP - Residue on Ignition:
    ≤0.1 %
  • USP - Chloride (Cl):
    ≤0.05 %
  • USP - Sulfate (SO₄):
    ≤0.03 %
  • USP - Iron (Fe):
    ≤0.003 %
  • USP - Organic Impurities - Total Impurities 1:
    ≤0.01 %
  • USP - Organic Impurities - Total Impurities 2:
    ≤0.03 %
  • USP - Organic Impurities - Tryptophan Related Compound A:
    ≤10 ppm
  • JP - Assay (C₁₁H₁₂N₂O₂) (dried basis):
    98.5 - 101.0 %
  • JP - Identification:
    Passes Test
  • JP - Specific Rotation [Å]²º^D:
    -33.0 - -30.0 Degree
  • JP - pH:
    5.4 - 6.4
  • JP - Clarity and Color of Solution:
    Passes Test
  • JP - Chloride (Cl):
    ≤0.021 %
  • JP - Sulfate (SO₄):
    ≤0.028 %
  • JP - Ammonium (NH₄):
    ≤0.02 %
  • JP - Heavy Metals (as Pb):
    ≤20 ppm
  • JP - Arsenic (As):
    ≤2 ppm
  • JP - Related Substances:
    Passes Test
  • JP - Loss on Drying at 105°C:
    ≤0.30 %
  • JP - Residue on Ignition:
    ≤0.10 %
  • EP - Identification A:
    Passes Test
  • EP - Identification B:
    Passes Test
  • EP - Appearance of Solution:
    Passes Test
  • EP - Specific Optical Rotation [Å]²º^D:
    -33.0 - -30.0 Degree
  • EP/BP-Ninhydrin-Positive Substances-Each:
    ≤0.2 %
  • EP/BP-Ninhydrin-Positive Substances-Total Impurities:
    ≤0.5 %
  • EP - 1,1'Ethylidenebistryptophan:
    ≤10 ppm
  • EP - Sum of the Areas less than Tryptophan®:
    ≤100 ppm
  • EP - Sum of the Areas greater than Tryptophan®:
    ≤300 ppm
  • EP - Chloride (Cl):
    ≤200 ppm
  • EP - Sulfate (SO₄):
    ≤300 ppm
  • EP/BP - Ammonium (NH₄):
    ≤0.02 %
  • EP - Iron (Fe):
    ≤20 ppm
  • EP - Loss on Drying at 105°C:
    ≤0.5 %
  • EP - Sulfated Ash:
    ≤0.1 %
  • EP - Assay (C₁₁H₁₂N₂O₂) (dried basis):
    98.5 - 101.0 %