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ChemicalBook >> CAS DataBase List >> PEAK E

PEAK E

PEAK E price.
  • $32 - $169243
  • Product name: PEAK E
  • CAS: 132685-02-0
  • MF: C24H26N4O4
  • MW: 434.49
  • EINECS:
  • MDL Number:MFCD00132891
  • Synonyms:1,1'-ETHYLIDENE-BIS(L-TRYPTOPHAN);1,1'-ETHYLIDENE-BIS(L-TRYTOPHAN);PEAK E;CONTAMINANT 97;Tryptophan Related Compound A (15 mg) (1,1'-ethylidene-bis-(L-tryptophan));Tryptophan Related CoMpound A;Tadalafil Impurity Q;1,1'-ethylidenebis
Price24 Properties Safety Information Description
24 prices
Selected condition：
Brand
  • aablocks
  • ACHEMBLOCK
  • Biosynth
  • Cayman Chemical
  • ChemScene
  • Sigma-Aldrich
  • TRC
  • Usbiological
Package
  • 1mg
  • 5mg
  • 10mg
  • 15mg
  • 25MG
  • 30MG
  • 50mg
  • 100mg
  • 1g
  • 2ea
  • Manufactureraablocks
  • Product numberAA009BYF
  • Product description1,1′-Ethylidenebis[L-tryptophan] ≥95%
  • Packaging1mg
  • Price$32
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA009BYF
  • Product description1,1′-Ethylidenebis[L-tryptophan] ≥95%
  • Packaging5mg
  • Price$148
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA009BYF
  • Product description1,1′-Ethylidenebis[L-tryptophan] ≥95%
  • Packaging10mg
  • Price$217
  • Updated2026-05-28
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD288788
  • Product description1,1′-Ethylidenebis[L-tryptophan] 95%
  • Packaging25MG
  • Price$495
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD288788
  • Product description1,1′-Ethylidenebis[L-tryptophan] 95%
  • Packaging5MG
  • Price$185
  • Updated2026-05-27
  • Buy
  • ManufacturerBiosynth
  • Product numberFE16364
  • Product description1,1'-Ethylidene-bis-(L-tryptophan)
  • Packaging25mg
  • Price$843.75
  • Updated2026-06-04
  • Buy
  • ManufacturerBiosynth
  • Product numberFE16364
  • Product description1,1'-Ethylidene-bis-(L-tryptophan)
  • Packaging5mg
  • Price$226.85
  • Updated2026-06-04
  • Buy
  • ManufacturerBiosynth
  • Product numberFE16364
  • Product description1,1'-Ethylidene-bis-(L-tryptophan)
  • Packaging10mg
  • Price$362.9
  • Updated2026-06-04
  • Buy
  • ManufacturerBiosynth
  • Product numberFE16364
  • Product description1,1'-Ethylidene-bis-(L-tryptophan)
  • Packaging50mg
  • Price$1103.5
  • Updated2026-06-04
  • Buy
  • ManufacturerBiosynth
  • Product numberFE16364
  • Product description1,1'-Ethylidene-bis-(L-tryptophan)
  • Packaging100mg
  • Price$1622
  • Updated2026-06-04
  • Buy
  • ManufacturerCayman Chemical
  • Product number35804
  • Product description1,1''-Ethylidene-bis-(L-tryptophan) ≥95%
  • Packaging1mg
  • Price$32
  • Updated2026-04-30
  • Buy
  • ManufacturerCayman Chemical
  • Product number35804
  • Product description1,1''-Ethylidene-bis-(L-tryptophan) ≥95%
  • Packaging25mg
  • Price$388
  • Updated2026-04-30
  • Buy
  • ManufacturerCayman Chemical
  • Product number35804
  • Product description1,1''-Ethylidene-bis-(L-tryptophan) ≥95%
  • Packaging10mg
  • Price$217
  • Updated2026-04-30
  • Buy
  • ManufacturerCayman Chemical
  • Product number35804
  • Product description1,1''-Ethylidene-bis-(L-tryptophan) ≥95%
  • Packaging5mg
  • Price$148
  • Updated2026-04-30
  • Buy
  • ManufacturerChemScene
  • Product numberCS-0641025
  • Product description1,1′-Ethylidenebis[L-tryptophan] ≥98%
  • Packaging25mg
  • Price$970
  • Updated2026-06-04
  • Buy
  • ManufacturerChemScene
  • Product numberCS-0641025
  • Product description1,1′-Ethylidenebis[L-tryptophan] ≥98%
  • Packaging50mg
  • Price$169243
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA009BYF 1,1′-Ethylidenebis[L-tryptophan] ≥95% 1mg $32 2026-05-28 Buy
aablocks AA009BYF 1,1′-Ethylidenebis[L-tryptophan] ≥95% 5mg $148 2026-05-28 Buy
aablocks AA009BYF 1,1′-Ethylidenebis[L-tryptophan] ≥95% 10mg $217 2026-05-28 Buy
ACHEMBLOCK AD288788 1,1′-Ethylidenebis[L-tryptophan] 95% 25MG $495 2026-05-27 Buy
ACHEMBLOCK AD288788 1,1′-Ethylidenebis[L-tryptophan] 95% 5MG $185 2026-05-27 Buy
Biosynth FE16364 1,1'-Ethylidene-bis-(L-tryptophan) 25mg $843.75 2026-06-04 Buy
Biosynth FE16364 1,1'-Ethylidene-bis-(L-tryptophan) 5mg $226.85 2026-06-04 Buy
Biosynth FE16364 1,1'-Ethylidene-bis-(L-tryptophan) 10mg $362.9 2026-06-04 Buy
Biosynth FE16364 1,1'-Ethylidene-bis-(L-tryptophan) 50mg $1103.5 2026-06-04 Buy
Biosynth FE16364 1,1'-Ethylidene-bis-(L-tryptophan) 100mg $1622 2026-06-04 Buy
Cayman Chemical 35804 1,1''-Ethylidene-bis-(L-tryptophan) ≥95% 1mg $32 2026-04-30 Buy
Cayman Chemical 35804 1,1''-Ethylidene-bis-(L-tryptophan) ≥95% 25mg $388 2026-04-30 Buy
Cayman Chemical 35804 1,1''-Ethylidene-bis-(L-tryptophan) ≥95% 10mg $217 2026-04-30 Buy
Cayman Chemical 35804 1,1''-Ethylidene-bis-(L-tryptophan) ≥95% 5mg $148 2026-04-30 Buy
ChemScene CS-0641025 1,1′-Ethylidenebis[L-tryptophan] ≥98% 25mg $970 2026-06-04 Buy
ChemScene CS-0641025 1,1′-Ethylidenebis[L-tryptophan] ≥98% 50mg $169243 2026-06-04 Buy
Next Last

Properties

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)
form :solid
pka :1.95±0.10(Predicted)
color :Pale Beige to Brown
Stability :Decomposes under acidic condition, Hygroscopic
Major Application :pharmaceutical (small molecule)
InChIKey :DETVQFQGSVEQBH-PMACEKPBSA-N
SMILES :C(N1C2=C(C(=C1)C[C@@H](C(O)=O)N)C=CC=C2)(N1C2=C(C(=C1)C[C@@H](C(O)=O)N)C=CC=C2)C

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P321 Specific treatment (see … on this label).
P330 Rinse mouth.
P332+P313 IF SKIN irritation occurs: Get medical advice/attention.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

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

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Suppliers and manufacturers

Changzhou Xianglong Pharmaceutical Technology Co., LTD J & K SCIENTIFIC LTD. Sinopharm Chemical Reagent Co,Ltd. S.Z. PhyStandard Bio-Tech. Co., Ltd. Shanghai TaoSu Biochemical Technology Co., Ltd. Quality Control Solutions Ltd. Shanghai Macklin Biochemical Co.,Ltd. Shanghai Kewel Chemical Co., Ltd. BOC Sciences Shanghai YuanYe Biotechnology Co., Ltd.