Cas no 42854-62-6 (L-Alanine Benzyl Ester p-Toluenesulfonate Salt)
L-Alanine Benzyl Ester p-Toluenesulfonate Salt is a protected derivative of L-alanine, where the carboxyl group is esterified with benzyl alcohol and stabilized as a p-toluenesulfonate salt. This compound is widely used in peptide synthesis, particularly in solid-phase and solution-phase methodologies, due to its ability to protect the amino acid’s carboxyl functionality while leaving the amine group available for further coupling reactions. The p-toluenesulfonate counterion enhances solubility in organic solvents, facilitating purification and handling. Its crystalline form ensures high purity and stability, making it a reliable reagent for precise synthetic applications in pharmaceutical and biochemical research.
42854-62-6 structure
Product Name:L-Alanine Benzyl Ester p-Toluenesulfonate Salt
CAS No:42854-62-6
MF:C17H21NO5S
MW:351.417343854904
MDL:MFCD00066143
CID:55612
PubChem ID:24845826
Update Time:2025-06-08
L-Alanine Benzyl Ester p-Toluenesulfonate Salt Chemical and Physical Properties
Names and Identifiers
-
- beta-Alanine benzyl ester p-toluenesulfonate
- L-Alanine benzyl ester Toluene Sulfonic acid
- H-Ala-OBzl.Tos
- L-Alanine benzyl ester p-toluenesulfonate salt
- L-Alanine Benzyl Ester p-Toluenesulfonate
- L-Alanine Benzyl Ester 4-Toluenesulfonate
- Ala-OBzl TosOH
- Ala-OBzl.TosOH
- H-Ala-OBzl · p-tosylate
- H-Ala-OBzl.TosOH
- H-Ala-OBzl?TosOH
- L-Alanine benzyl ester tosylate
- L-Ala-Obel.TsOH
- : L-Alanine benzyl ester 4-toluenesulfonate
- H-ALA-OBZL TOS
- H-Ala-OBzl·TOS
- H-Ala-OBzl·Tos-OH
- H-L-Ala-OBn*TsOH
- L-Alanine Benzy
- L-Alanine benzyl est
- L-alanine benzyl ester hydrogen tosylate
- L-alanine benzyl ester p-toluene-sulfonate
- L-phe-OBzl·TosOH
- S-alanine benzyl ester p-toluenesulfonate
- Benzyl (2S)-2-aminopropanoate 4-toluenesulfonate
- (S)-Benzyl 2-aminopropanoate 4-methylbenzenesulfonate
- H-D-ALA-OBZL P-TOSYLATE
- C17H21NO5S
- Ala-OBzl?TosOH
- H-Ala-OBzl TsOH
- H-Ala-OBzl.Tos-OH
- H-D-Ala-OBlz. Tos
- NWOPHJSSB
- H-Ala-OBzl yenTos-OH
- NWOPHJSSBMABBD-QRPNPIFTSA-N
- alanine
- H-Ala-OBzl·TosOH,98%
- SCHEMBL716770
- alanine benzyl ester p-toluenesulfonate
- FD21013
- AKOS015895455
- NS00088717
- 2-Amino-propionic acid benzyl ester; compound with toluene-4-sulfonic acid;L-Alanine Benzyl Ester p-Toluenesulfonate
- AKOS015840383
- AC-14337
- benzyl (2S)-2-aminopropanoate;4-methylbenzenesulfonic acid
- L-Alanine, phenylmethyl ester, 4-methylbenzenesulfonate
- 2-Amino-propionic acid benzyl ester; compound with toluene-4-sulfonic acid
- CS-W011863
- Q-101558
- AM81489
- L-Alninebenzylester-p-toluene sulfonate salt
- MFCD00066143
- AS-48935
- L-Alaninebenzylestertoluenesulfonicacid
- 42854-62-6
- L-alanine benzylester p-toluene sulfonate
- 4-methylbenzenesulfonate;[(2S)-1-oxo-1-phenylmethoxypropan-2-yl]azanium
- L-Alaninebenzylesterp-toluenesulfonatesalt
- NS00089659
- W-60399
- A847867
- H-ALA-OBZL P-TOSYLATE
- L-Alanine benzyl ester p-toluenesulfonate salt, >=95.0% (T)
- J-300010
- Benzyl alaninate 4-methylbenzenesulfonate (1:1)
- A2005
- BENZYL L-ALANINATE 4-METHYLBENZENESULFONATE
- DB-264490
- L-Alanine Benzyl Ester p-Toluenesulfonate Salt
-
- MDL： MFCD00066143
- Inchi： 1S/C10H13NO2.C7H8O3S/c1-8(11)10(12)13-7-9-5-3-2-4-6-9;1-6-2-4-7(5-3-6)11(8,9)10/h2-6,8H,7,11H2,1H3;2-5H,1H3,(H,8,9,10)/t8-;/m0./s1
- InChI Key： NWOPHJSSBMABBD-QRPNPIFTSA-N
- SMILES： S(C1C=CC(C)=CC=1)(=O)(=O)O.O(C([C@H](C)N)=O)CC1C=CC=CC=1
- BRN： 3586474
Computed Properties
- Exact Mass: 351.11400
- Monoisotopic Mass: 351.11404394 g/mol
- Isotope Atom Count: 0
- Hydrogen Bond Donor Count: 2
- Hydrogen Bond Acceptor Count: 6
- Heavy Atom Count: 24
- Rotatable Bond Count: 5
- Complexity: 371
- Covalently-Bonded Unit Count: 2
- Defined Atom Stereocenter Count: 0
- Undefined Atom Stereocenter Count : 1
- Defined Bond Stereocenter Count: 0
- Undefined Bond Stereocenter Count: 0
- Surface Charge: 0
- Tautomer Count: 351
- XLogP3: Not determined
- Topological Polar Surface Area: 115
- Molecular Weight: 351.4
Experimental Properties
- Color/Form: solid
- Density: 1.2600
- Melting Point: 114.0 to 118.0 deg-C
- Boiling Point: 256.5℃ at 760 mmHg
- Flash Point: No data available
- Refractive Index: -5.0 ° (C=3, MeOH)
- PSA: 115.07000
- LogP: 4.09980
- Specific Rotation: -5 o (c=3% in methanol)
- Optical Activity: [α]20/D ?5.0±0.5°, c =?3% in methanol
- Solubility: Not determined
- Vapor Pressure: No data available
L-Alanine Benzyl Ester p-Toluenesulfonate Salt Security Information
- Signal Word：warning
- Hazard Statement： H303May be harmful if swallowed+H313Skin contact may be harmful+H333Inhalation may be harmful to the body
-
Warning Statement：
P264Thoroughly clean after treatment
P280Wear protective gloves/Wear protective clothing/Wear protective goggles/Wear a protective mask
P305If it enters the eyes
P351Rinse carefully with water for a few minutes
P338Remove the contact lens(If any)And easy to operate,Continue flushing
P337If eye irritation persists
P313Obtain medical advice/care - Hazardous Material transportation number：NONH for all modes of transport
- WGK Germany：3
- Hazard Category Code： 36/37/38
- Safety Instruction： S22-S24/25
- Safety Term：S22;S24/25
- Storage Condition：Storage temperature 2-8 ° C
L-Alanine Benzyl Ester p-Toluenesulfonate Salt Customs Data
- HS CODE：2922499990
- Customs Data：
China Customs Code:
2922499990Overview:
2922499990 Other amino acids and their esters and their salts(Except those containing more than one oxygen-containing group). VAT:17.0% Tax refund rate:9.0% Regulatory conditions:AB(Customs clearance form for Inbound Goods,Customs clearance form for outbound goods) MFN tariff:6.5% general tariff:30.0%
Declaration elements:
Product Name, component content, use to, The color of ethanolamine and its salt should be reported, The package of ethanolamine and its salt shall be declared
Regulatory conditions:
A.Customs clearance form for Inbound Goods
B.Customs clearance form for outbound goodsInspection and quarantine category:
P.Imported animals and plants\Quarantine of animal and plant products
Q.Outbound animals and plants\Quarantine of animal and plant products
R.Sanitary supervision and inspection of imported food
S.Sanitary supervision and inspection of exported food
M.Import commodity inspection
N.Export commodity inspectionSummary:
HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0%
L-Alanine Benzyl Ester p-Toluenesulfonate Salt Pricemore >>
| Related Categories | No. | Product Name | Cas No. | Purity | Specification | Price | update time | Inquiry |
|---|---|---|---|---|---|---|---|---|
| Fluorochem | 045325-5g |
h-ala-obzl.tosoh |
42854-62-6 | 98% | 5g |
￡11.00 | 2022-03-01 | |
| Fluorochem | 045325-1g |
h-ala-obzl.tosoh |
42854-62-6 | 98% | 1g |
￡10.00 | 2022-03-01 | |
| SHANG HAI XIAN DING Biotechnology Co., Ltd. | A2005-25g |
L-Alanine Benzyl Ester p-Toluenesulfonate Salt |
42854-62-6 | 98.0%(LC&T) | 25g |
￥460.0 | 2022-05-30 | |
| SHANG HAI XIAN DING Biotechnology Co., Ltd. | A2005-5g |
L-Alanine Benzyl Ester p-Toluenesulfonate Salt |
42854-62-6 | 98.0%(LC&T) | 5g |
￥135.0 | 2022-05-30 | |
| ChemScence | CS-W011863-100g |
L-Alanine benzyl ester tosylate |
42854-62-6 | >98.0% | 100g |
$83.0 | 2022-04-27 | |
| ChemScence | CS-W011863-500g |
L-Alanine benzyl ester tosylate |
42854-62-6 | >98.0% | 500g |
$327.0 | 2022-04-27 | |
| ChemScence | CS-W011863-1000g |
L-Alanine benzyl ester tosylate |
42854-62-6 | >98.0% | 1000g |
$591.0 | 2021-09-02 | |
| SHANG HAI YI EN HUA XUE JI SHU Co., Ltd. | R003204-100g |
L-Alanine Benzyl Ester p-Toluenesulfonate Salt |
42854-62-6 | 98% | 100g |
￥273 | 2023-09-09 | |
| SHANG HAI YI EN HUA XUE JI SHU Co., Ltd. | R003204-25g |
L-Alanine Benzyl Ester p-Toluenesulfonate Salt |
42854-62-6 | 98% | 25g |
￥77 | 2023-09-09 | |
| SHANG HAI YI EN HUA XUE JI SHU Co., Ltd. | R003204-5g |
L-Alanine Benzyl Ester p-Toluenesulfonate Salt |
42854-62-6 | 98% | 5g |
￥27 | 2023-09-09 |
L-Alanine Benzyl Ester p-Toluenesulfonate Salt Suppliers
Tiancheng Chemical (Jiangsu) Co., Ltd
Gold Member
Audited Supplier
(CAS:42854-62-6)L-丙氨酸芐酯對甲苯磺酸鹽
Order Number:LE26563505
Stock Status:in Stock
Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 12:56
Price ($):discuss personally
Email:[email protected]
L-Alanine Benzyl Ester p-Toluenesulfonate Salt Related Literature
-
Shaun D. Wong,Edward I. Solomon Dalton Trans., 2014,43, 17567-17577
-
Ana G. Neo,Ana Bornadiego,Jesús Díaz,Stefano Marcaccini,Carlos F. Marcos Org. Biomol. Chem., 2013,11, 6546-6555
-
Domenico Lombardo,Gianmarco Munaò,Pietro Calandra,Luigi Pasqua,Maria Teresa Caccamo Phys. Chem. Chem. Phys., 2019,21, 11983-11991
-
Max Attwood,Hiroki Akutsu,Lee Martin,Toby J. Blundell,Pierre Le Maguere,Scott S. Turner Dalton Trans., 2021,50, 11843-11851
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Recommended suppliers
Tiancheng Chemical (Jiangsu) Co., Ltd
(CAS:42854-62-6)L-丙氨酸芐酯對甲苯磺酸鹽
Purity:99%
Quantity:25KG,200KG,1000KG
Price ($):Inquiry