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PEAK E

Product Name
PEAK E
CAS No.
132685-02-0
Chemical Name
PEAK E
Synonyms
EBT;PEAK E;CONTAMINANT 97;1,1'-ethylidenebis;Tadalafil Impurity Q;Tadalafil Impurity 50 DiHCl;Tryptophan Related CoMpound A;Tryptophan EP Impurity A 2HCl;L-Tryptophan,1,1'-ethylidenebis;1,1’-Ethylidenebis[L-tryptophan
CBNumber
CB3701001
Molecular Formula
C24H26N4O4
Formula Weight
434.49
MOL File
132685-02-0.mol
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PEAK E Property

Melting point:
>210°C (dec.)
Boiling point:
718.5±60.0 °C(Predicted)
Density 
1.41±0.1 g/cm3(Predicted)
storage temp. 
0-6°C
solubility 
Aqueous Base (Slightly)
pka
1.95±0.10(Predicted)
color 
Pale Beige to Brown
Stability:
Decomposes under acidic condition, Hygroscopic
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Safety

HS Code 
2933997500
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
PHR2602
Product name
Tryptophan Related Compound A
Purity
Pharmaceutical Secondary Standard; Certified Reference Material
Packaging
30MG
Price
$602
Updated
2024/03/01
Sigma-Aldrich
Product number
E2205500
Product name
1,1′-Ethylidenebistryptophan
Packaging
2ea
Price
$153
Updated
2024/03/01
Sigma-Aldrich
Product number
1700512
Product name
1,1′-Ethylidenebistryptophan
Packaging
15mg
Price
$1440
Updated
2024/03/01
TRC
Product number
E919880
Product name
1,1’-Ethylidenebis[L-tryptophan]
Packaging
25mg
Price
$180
Updated
2021/12/16
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PEAK E Chemical Properties,Usage,Production

Uses

1,1’-Ethylidenebis[L-tryptophan] is a L-tryptophan (T947210) contaminant found in the peripheral blood mononuclear cells from patients with functional somatic syndromes.

PEAK E Preparation Products And Raw materials

Raw materials

Preparation Products

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PEAK E Suppliers

China 57 India 2 Japan 1 United Kingdom 2 United States 5 USA 1 Global 68
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132685-02-0, PEAK ERelated Search:

QBWNUEJPRUVNTD-FOIQADDNSA-N (6R,trans)-6-(3,4-dihydroxyphenyl)-2,3,6,7,12,12a-hexahydro-2-Methyl-pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione Piperonyl aldehyde Tadalafil Impurity 44 Tadalafil Impurity 47 BENZHYDRYL 6,6-DIHYDROPENICILLIC ACID 1-OXIDE[TAZOBACTAM INTERMEDIATE] Tadalafil Impurity 49 HCl (1S,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester Tadalafil EP IMpurity G Tadalafil Impurity 11 Tadalafil Impurity 39 Tadalafil Impurity 62 Tadalafil Impuirty 16 Tadalafil Impurity 25 (Mixture of Diastereomers) (1R,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate hydrochloride (1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester Tadalafil iMpurity E Tadalafil Spiro-urethane Impurity (EP Impurity F)

  • 1,1'-ETHYLIDENE-BIS(L-TRYPTOPHAN)
  • 1,1'-ETHYLIDENE-BIS(L-TRYTOPHAN)
  • PEAK E
  • EBT
  • CONTAMINANT 97
  • Tryptophan Related Compound A (15 mg) (1,1'-ethylidene-bis-(L-tryptophan))
  • Tryptophan Related CoMpound A
  • Tadalafil Impurity Q
  • 1,1'-ethylidenebis<l-tryptophan></l-tryptophan>
  • Tadalafil Impurity 50 DiHCl
  • L-Tryptophan,1,1'-ethylidenebis
  • 1,1'-ethylidenebis
  • 3,3'-[Ethylidenebis(1H-indole-1,3-d
  • 1,1'-Ethylidenebistryptophan CRS
  • (2S,2'S)-3,3'-(1,1'-(Ethane-1,1-diyl)bis(1H-indole-3,1-diyl))bis(2-aminopropanoic acid)
  • Tadalafil Impurity (1,1?'-thylidenebistryptophan)
  • Tryptophan Related Compound A(Secondary Standards traceble to USP)
  • Tryptophan Related Compound A (1,1''-ethylidene-bis(L-tryptophan)) (1700512)
  • Tryptophan USP Related Compound A
  • Tryptophan EP Impurity A(Tryptophan USP Related Compound A)
  • 1,1’-Ethylidenebis[L-tryptophan
  • Tryptophan EP Impurity A 2HCl
  • 132685-02-0
  • Amino Acids & Derivatives, Pharmaceuticals, Intermediates & Fine Chemicals