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ChemicalBook >> CAS DataBase List >> DL-Tryptophan

DL-Tryptophan

DL-Tryptophan price.
  • $6 - $3937.5
  • Product name: DL-Tryptophan
  • CAS: 54-12-6
  • MF: C11H12N2O2
  • MW: 204.23
  • EINECS:200-194-9
  • MDL Number:MFCD00064339
  • Synonyms:(rs)-tryptophan ;2-Amino-3,3’-IndolylpropanoicAcid ;DL-Trytophan;DL-Trytophane;DL-TRYPTOPHAN extrapure CHR;(±)-α-Amino-3-indolepropionic acid, (±)-2-Amino-3-(3-indolyl)propionic acid, DL-3β-Indolylalanine;α-amino-β-indolepropinic acid;DL-Tryptoplaan
Price89 Properties Safety Information Description
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  • Manufactureraablocks
  • Product numberAA003PRX
  • Product descriptionDL-Tryptophan 98%
  • Packaging5g
  • Price$8
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003PRX
  • Product descriptionDL-Tryptophan 97%
  • Packaging25g
  • Price$10
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA003PRX
  • Product descriptionDL-Tryptophan 98%
  • Packaging100g
  • Price$33
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA003PRX
  • Product descriptionDL-Tryptophan ≥99%
  • Packaging500g
  • Price$138
  • Updated2026-05-28
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  • ManufacturerAcrotein
  • Product numberNA-0800
  • Product descriptionDL-Tryptophan 97%
  • Packaging100g
  • Price$95.7
  • Updated2026-05-25
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  • ManufacturerAcrotein
  • Product numberNA-0800
  • Product descriptionDL-Tryptophan 97%
  • Packaging250g
  • Price$220
  • Updated2026-05-25
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  • ManufacturerAcrotein
  • Product numberNA-0800
  • Product descriptionDL-Tryptophan 97%
  • Packaging25g
  • Price$34.29
  • Updated2026-05-25
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  • ManufacturerActivate Scientific
  • Product numberAS33044-rac
  • Product descriptionDL-Tryptophan 98+%
  • Packaging25g
  • Price$32
  • Updated2021-12-16
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  • ManufacturerActivate Scientific
  • Product numberAS33044-rac
  • Product descriptionDL-Tryptophan 98+%
  • Packaging100g
  • Price$97
  • Updated2021-12-16
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  • ManufacturerAHH
  • Product numberMT-50662
  • Product descriptionDL-Tryptophan 97%
  • Packaging1000g
  • Price$330
  • Updated2026-05-26
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  • ManufacturerAK Scientific
  • Product numberC639
  • Product descriptionDL-Tryptophan 98%
  • Packaging100g
  • Price$70
  • Updated2026-06-04
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  • ManufacturerAK Scientific
  • Product numberC639
  • Product descriptionDL-Tryptophan
  • Packaging500g
  • Price$267
  • Updated2021-12-16
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  • ManufacturerAK Scientific
  • Product numberJ54095
  • Product descriptionDL-Tryptophan 95%
  • Packaging100g
  • Price$50
  • Updated2026-06-04
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  • ManufacturerAK Scientific
  • Product numberC639
  • Product descriptionDL-Tryptophan 98%
  • Packaging5g
  • Price$18
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ54095
  • Product descriptionDL-Tryptophan 95%
  • Packaging5g
  • Price$13
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ54095
  • Product descriptionDL-Tryptophan 95%
  • Packaging25g
  • Price$22
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA003PRX DL-Tryptophan 98% 5g $8 2026-05-28 Buy
aablocks AA003PRX DL-Tryptophan 97% 25g $10 2026-05-28 Buy
aablocks AA003PRX DL-Tryptophan 98% 100g $33 2026-05-28 Buy
aablocks AA003PRX DL-Tryptophan ≥99% 500g $138 2026-05-28 Buy
Acrotein NA-0800 DL-Tryptophan 97% 100g $95.7 2026-05-25 Buy
Acrotein NA-0800 DL-Tryptophan 97% 250g $220 2026-05-25 Buy
Acrotein NA-0800 DL-Tryptophan 97% 25g $34.29 2026-05-25 Buy
Activate Scientific AS33044-rac DL-Tryptophan 98+% 25g $32 2021-12-16 Buy
Activate Scientific AS33044-rac DL-Tryptophan 98+% 100g $97 2021-12-16 Buy
AHH MT-50662 DL-Tryptophan 97% 1000g $330 2026-05-26 Buy
AK Scientific C639 DL-Tryptophan 98% 100g $70 2026-06-04 Buy
AK Scientific C639 DL-Tryptophan 500g $267 2021-12-16 Buy
AK Scientific J54095 DL-Tryptophan 95% 100g $50 2026-06-04 Buy
AK Scientific C639 DL-Tryptophan 98% 5g $18 2026-06-04 Buy
AK Scientific J54095 DL-Tryptophan 95% 5g $13 2026-06-04 Buy
AK Scientific J54095 DL-Tryptophan 95% 25g $22 2026-06-04 Buy
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Properties

Melting point :289-290 °C (dec.)(lit.)
Boiling point :342.72°C (rough estimate)
alpha :[α]D20 -1~1°(c=1, dil. HCl)
Density :1.1754 (rough estimate)
refractive index :1.5200 (estimate)
storage temp. :Keep in dark place,Inert atmosphere,Room temperature
solubility :methanol: water (7:3): soluble
pka :2.30±0.10(Predicted)
form :Powder
color :White to light beige or light yellow
Odor :Odorless
Water Solubility :10 g/L (20 ºC)
BRN :86196
Stability :Stable. Incompatible with strong oxidizing agents, strong acids.
Cosmetics Ingredients Functions :ANTISTATIC
HAIR CONDITIONING
FRAGRANCE InChI :1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)
InChIKey :QIVBCDIJIAJPQS-UHFFFAOYSA-N
SMILES :NC(Cc1c[nH]c2ccccc12)C(O)=O
LogP :1.040 (est)
CAS DataBase Reference :54-12-6(CAS DataBase Reference)
NIST Chemistry Reference :Tryptophane(54-12-6)
EPA Substance Registry System :Tryptophan (54-12-6)

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
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
Precautionary statements:
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P332+P313 IF SKIN irritation occurs: Get medical advice/attention.
P337+P313 IF eye irritation persists: Get medical advice/attention.

Description

DL-Tryptophan is an amino acid precursor of serotonin and melatonin. It is a dietary supplement for use as an antidepressant, anxiolytic, and sleep aid. DL-tryptophan also can be used as feed nutrition enhancer, antioxidants.

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Suppliers and manufacturers

Wuxi maimo topp biotechnology co., LTD Shanghai Boyle Chemical Co., Ltd. J & K SCIENTIFIC LTD. Meryer (Shanghai) Chemical Technology Co., Ltd. Alfa Aesar TCI (Shanghai) Development Co., Ltd. ShangHai DEMO Chemical Co.,Ltd Energy Chemical Beijing Ouhe Technology Co., Ltd JinYan Chemicals(ShangHai) Co.,Ltd.