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D-tryptophan

Also known as: (+)-Tryptophan, (2R)-2-amino-3-(1H-indol-3-yl)propanoic acid, (R)-2-Amino-3-(3-indolyl)propionic acid, (R)-tryptophan, D(+)-Tryptophan, D-2-Amino-3-(3-indolyl)propionic acid, D-2-Amino-3-indolepropionic acid, D-2-Amino-3-indolylpropanoic acid, D-alpha-Amino-3-indolepropionic acid, D-Trp, D-Tryptophane, H-D-Trp-OH, Tadalafil Impurity 1, Tryptophan, D-

D-tryptophan (CAS 153-94-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H12N2O2 and a molecular weight of 204.225 g/mol. Key properties include a melting point of 282-285ºC, a boiling point of 447.9±35.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 224.7±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
153-94-6
Jingsj CID
J-1001586-8
Molecular Formula
C11H12N2O2
Molecular Weight
204.225 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point282-285ºC
Boiling Point447.9±35.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point224.7±25.9 °C
Exact Mass204.089874
PSA79.11000
LogP1.04
Vapor Pressure0.0±1.1 mmHg at 25°C
Refractive Index1.698

Activity & Biological Data

TargetHuman Endogenous Metabolite

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of D-tryptophan?

The CAS number of D-tryptophan is 153-94-6.

What are the molecular formula and molecular weight of D-tryptophan?

D-tryptophan has molecular formula C11H12N2O2 and molecular weight 204.225 g/mol.

What are the upstream and downstream products of D-tryptophan?

For D-tryptophan, Upstream Products: DL-Tryptophan, D-Alanine, Indole-3-pyruvic acid; Downstream Products: Chloropretadalafil, Tadalafil, Indole-3-pyruvic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "D-tryptophan (CAS 153-94-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1001586-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.