DL-Tyrosine
DL-Tyrosine
CAS: 556-03-6
Molecular Formula: C9H11NO3
DL-Tyrosine - Names and Identifiers
| Name | DL-Tyrosine |
| Synonyms | DL-Tyrosine DL-TYROSINE extrapure CHR (±)-3-(p-Hydroxyphenyl)alanine 3-(4-Hydroxyphenyl)-DL-alanine DL-α-AMino-β-p-hydroxyphenylpropionic acid 3-(4-Hydroxyphenyl)-DL-alanine~H-DL-Tyr-OH (à)-2-Amino-3-(4-hydroxyphenyl)propionic acid rac-(R*)-2-Amino-3-(p-hydroxyphenyl)propionic acid (±)-2-Amino-3-(4-hydroxyphenyl)propionic acid, 3-(4-Hydroxyphenyl)-DL-alanine |
| CAS | 556-03-6 |
| EINECS | 209-113-1 |
| InChI | InChI=1/C9H11NO3/c10-8(9(12)13)5-6-1-3-7(11)4-2-6/h1-4,8,11H,5,10H2,(H,12,13) |
DL-Tyrosine - Physico-chemical Properties
| Molecular Formula | C9H11NO3 |
| Molar Mass | 181.19 |
| Density | 1.2375 (rough estimate) |
| Melting Point | ≥300 °C (lit.) |
| Boling Point | 314.29°C (rough estimate) |
| Water Solubility | Soluble in water. |
| Solubility | Soluble in alkali solution and dilute acid, hardly soluble in water, insoluble in acetone, ethanol and ether |
| Appearance | White crystal |
| Color | White to Off-White |
| Merck | 14,9839 |
| BRN | 515881 |
| pKa | pK1:2.18(+1);pK2:9.11(0);pK3:10.6(OH) (25°C) |
| Storage Condition | Store at RT. |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Sensitive | Sensitive to light |
| Refractive Index | 1.5270 (estimate) |
| MDL | MFCD00063074 |
| Physical and Chemical Properties | White fine needle Crystal, odorless, bitter taste; Soluble in alkali solution and dilute acid, insoluble in water, insoluble in acetone, ethanol and ether; Decomposition point of 316 ℃. |
DL-Tyrosine - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29225000 |
DL-Tyrosine - Reference
| Reference Show more | 1. Li Nan, Mao Qing, Zhou Xue-Xue, Qi Ya-Jie. Preparation of a whitening cream [J]. Heilongjiang Science, 2021,12(04):26-27 31. 2. Zhang Lei, Feng Chen, Yang Shuqin, Guo Shuru. Study on the efficacy of a compound plant extract against ultraviolet and blue light [J]. Journal of Daily Chemical Science, 2021,44(04):44-48. 3. [IF = 7.46] Ye Zhang et al."A dual-signal sensing platform based on nanosheet materials for rational flux and colormetric detection of enzyme activities in human blood." Sensor Actuat B- Chem. 2021 Nov;346:130531 4. [IF = 4.556] Dandan Zhao et al."Physico-chemical properties and free amino acids profiles of six wolfberry cultivars in Zhongning." J Food Compos Anal. 2020 May;88:103460 5. [IF=4.379] Feng Lin et al."Chemical profile changes during pile fermentation of Qingzhuan tea affect inhibition of α-amylase and lipase."Sci Rep-Uk. 2020 Feb;10(1):1-10 6. [IF=3.361] Ning Zhao et al."Ratiometric fluorescence probe of Cu2 and biothiols by using carbon dots and copper nanoclusters."Rsc Adv. 2021 Oct;11(53):33662-33674 7. [IF=4.242] Hang Yang et al."Dietary leucine requirement of juvenile largemouth bass (Micropterus salmoides) based on growth, nutrient utilization and growth-related gene analyses."Aquaculture. 2022 Jun;555:738207 8. [IF=3.935] Min Zhang et al."Chemical profile and miscarriage prevention evaluation of Jiao-ai decoction, a classical traditional Chinese formula."JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS. 2022 May;:114832 9. [IF=2.281] Zihui Ma et al."Studies on the biosynthetic pathways of melanin in Auricularia auricula."JOURNAL OF BASIC MICROBIOLOGY |
DL-Tyrosine - Introduction
Heat to 316 ℃ for decomposition. Soluble in alkali solution, soluble in water, slightly soluble in alcohol, insoluble in ether and acetone. It's irritating.
Last Update：2022-10-16 17:26:20
DL-Tyrosine - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| biological activity | DL-Tyrosine is an aromatic non-essential amino acid synthesized from the essential amino acid phenylalanine. DL-Tyrosine is the precursor of several important neurotransmitters (epinephrine, norepinephrine, dopamine). |
| Use | for biochemical studies. |
| production method | L-tyrosine is used as raw material, acetic anhydride is added for acylation reaction to obtain O,N-diacetyl-L-tyrosine, O,N-diacetyl-L-tyrosine was hydrolyzed with hydrochloric acid and treated with activated carbon to obtain a pure product. |
Last Update：2024-04-09 21:32:06
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View History
DL-Tyrosine
乙烯基乙烯
间氟甲苯
2-乙基己酸铋盐
177911-87-4
Vinyltriphenylphosphonium
HANSA ISN-0155
51414-25-6
3-methylbutyl formate
119425-90-0
乙烯基乙烯
间氟甲苯
2-乙基己酸铋盐
177911-87-4
Vinyltriphenylphosphonium
HANSA ISN-0155
51414-25-6
3-methylbutyl formate
119425-90-0