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D-(+)-Tryptophan (CAS # 153-94-6) Featured duab
  • D-(+)-Tryptophan (CAS # 153-94-6) 1

D-(+)-Tryptophan (CAS # 153-94-6)

Chemical Property:

Molecular Formula C11H12N2O2
Molar Mass 204.23 Nws
Qhov ntom 1.1754 (zeeg)
Melting Point 282-285 ° C (hnub) (lit.)
Boling Point 342.72°C (kev kwv yees kwv yees)
Kev sib hloov tshwj xeeb (α) 31.5ºC (c = 1, H2O 24 ºC)
Flash Point 195.4°C dej
Dej Solubility 11 g / L (20 ºC)
Solubility Soluble nyob rau hauv kub ethanol, alkaline kua thiab dej, insoluble nyob rau hauv chloroform, cov aqueous kua yog weakly acidic.
Vapor Siab 4.27E-07mmHg ntawm 25 ° C
Qhov tshwm sim Dawb los yog dawb zoo li crystalline hmoov
Xim Dawb rau me ntsis daj
BRN 86198 ib
pKa 2.30 ± 0.10 (Kev kwv yees)
Kev cia khoom Khaws nyob rau hauv qhov chaw tsaus, inert cua, chav tsev kub
Kev ruaj ntseg ruaj khov. Incompatible nrog oxidizing tus neeg sawv cev.
Refractive Index 31 ° (C = 1, H2O)
MDL PAB 00005647
Physical thiab Chemical Properties melting point 282-285 ℃
Kev sib hloov kho qhov muag 31.5 ° (c = 1, H2O 24 ℃)
dej-soluble 11g / L (20 ℃)
Siv Nws yog ib qho tseem ceeb ntawm cov khoom noj khoom haus, siv rau hauv cov tshuaj raws li tus neeg saib xyuas kev noj qab haus huv

Product Detail

Khoom cim npe

Risk thiab Safety

Hazard Cov Cim Xi-xaj
Risk Codes R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij.
R41 - Riam phom loj rau qhov muag
R37/38 - Kab mob ua pa thiab tawv nqaij.
R22 - Ua phem yog tias nqos
Kev nyab xeeb piav qhia S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag.
S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag.
S36 - Hnav khaub ncaws tiv thaiv zoo.
S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob.
WGK Germany 3
RTECS YN6129000
FLUKA BRAND F CODE 8
TSCA Yog lawm
HS Code 293399 0
Hazard Class IRRITANT

Kev siv

Kev siv

Qhia ntxiv
 1. Gan Huiyu Huanglu. Kev Npaj thiab Kev Siv L-Proline Hloov Kho Kub Nanochannels [J]. Phau ntawv Journal ntawm Minjiang Uniive…

 

Txuj

Cov ntaub ntawv pov thawj pov thawj cov ntaub ntawv

Cov khoom no yog L-2-amino -3 (B-indole) propionic acid. Muab xam raws li cov khoom qhuav, cov ntsiab lus ntawm C11H12N202 yuav tsum tsis pub tsawg tshaj 99.0%.

Yam ntxwv

Cov ntaub ntawv pov thawj pov thawj cov ntaub ntawv
  • Cov khoom no yog dawb mus rau yellowish siv lead ua los yog crystalline hmoov; Tsis hnov ​​tsw.
  • Cov khoom no yog me ntsis soluble hauv dej, me ntsis soluble hauv ethanol, insoluble hauv chloroform, soluble hauv formic acid; Dissolved nyob rau hauv sodium hydroxide test tov los yog dilute hydrochloric acid.

kev sib hloov

noj cov khoom no, precision hnyav, ntxiv dej kom yaj thiab quantitatively dilute los ua ib qho kev daws teeb meem uas muaj txog 10mg ib lml, thiab txiav txim raws li txoj cai (General txoj cai 0621), qhov kev sib hloov yog -30.0 ° rau -32.5 °.

Taw qhia

Nws yog ib qho unnatural isomer ntawm tryptophan

Kev kuaj mob sib txawv

Cov ntaub ntawv pov thawj pov thawj cov ntaub ntawv
  1. Cov nqi tsim nyog ntawm cov khoom lag luam thiab cov khoom siv tryptophan tau yaj hauv dej thiab diluted los npaj cov tshuaj uas muaj txog 10mg ib 1 ml raws li cov tshuaj ntsuam xyuas thiab kev siv tshuaj. Raws li kev kuaj mob chromatographic nyob rau hauv lwm cov amino acids, txoj hauj lwm thiab xim ntawm qhov chaw tseem ceeb ntawm cov tshuaj ntsuam xyuas yuav tsum yog tib yam li cov kev siv tshuaj.
  2. Lub infrared absorption spectrum ntawm cov khoom no yuav tsum ua raws li cov kev tswj hwm (Spectrum teeb 946).
  • Yav dhau los:
  • Tom ntej:
    • Sau koj cov lus ntawm no thiab xa tuaj rau peb

    cov khoom muaj feem xyuam