text.skipToContent text.skipToNavigation

Maximum quantity allowed is 999

Please select the quantity

CAS RN: 10513-45-8 | Product Number: B0832

N-tert-Butyl-5-methylisoxazolium Perchlorate

Purity: >98.0%(HPLC)(N)
  • Woodward's Reagent L
2   Contact Us 7  
3   Contact Us 19  

* Items in stock locally ship in 1-2 business days. Items from Japan stock are able to ship from a US warehouse within 2 weeks. Please contact TCI for lead times on items not in stock. Excludes regulated items and items that ship on ice.
* To send your quote request for bulk quantities, please click on the "Request Quote" button. Please note that we cannot offer bulk quantities for some products.
*TCI frequently reviews storage conditions to optimize them. Please note that the latest information on the storage temperature for the products is described on our website.

Product Number B0832
Purity / Analysis Method >98.0%(HPLC)(N)
Molecular Formula / Molecular Weight C__8H__1__4ClNO__5 = 239.65  
Physical State (20 deg.C) Solid
CAS RN 10513-45-8
Reaxys Registry Number 5202574
PubChem Substance ID 87563816
SDBS (AIST Spectral DB) 10455
MDL Number


Appearance White to Light yellow to Light red powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(with Total Nitrogen) min. 98.0 %
Melting point 119.0 to 122.0 °C
Properties (reference)
Melting Point 119 °C
Pictogram Pictogram
Signal Word Warning
Hazard Statements H272 : May intensify fire; oxidizer.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P220 : Keep/Store away from clothing/ combustible materials.
P210 : Keep away from heat.
P221 : Take any precaution to avoid mixing with combustibles.
P280 : Wear protective gloves/ eye protection/ face protection.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
Related Laws:
Transport Information:
UN Number (DOT-AIR) UN1479
Class (DOT-AIR) 5.1
Packing Group (TCI-A) III
HS Number 2934.99.9001
Woodward’s Reagent L: A Condensing Agent


Experimental procedure1):
Under nitrogen, N-tert-butyl-5-methylisoxazolium perchlorate (240 mg, 1 mmol) is added to a mixture of 3-quinoline carboxylic acid (173 mg, 1 mmol) and triethylamine (140 µL, 1 mmol) in DMF (2 mL). The mixture is stirred at room temperature for 4 h and then poured on iced water (50 mL). The precipitate is collected, washed with water and dried. The intermediate ester 1 (131 mg, 0.44 mmol) is isolated in 44% yield as a yellow powder. Then the product (110 mg, 0.36 mmol) in DMF (3 mL) is added to a freshly prepared guanidine 2 (123 mg, 0.39 mmol) and the mixture is stirred at 140 °C for 2 h. The solvent is evaporated under reduced pressure. Water (10 mL) is added to the residue, and after 12 h at 4 °C, the precipitate formed is filtered, washed with water, and dried to obtain compound 3 in 85% yield.


PubMed Literature


Documents (Note: Some products will not have analytical charts available.)
Safety Data Sheet (SDS)
Please select Language.

The requested SDS is not available.

Please Contact Us for more information.

C of A & Other Certificates
Please enter Lot Number Incorrect Lot Number is entered
Analytical Charts
Please enter Lot Number Incorrect Lot Number is entered

The requested analytical chart is not available. Sorry for the inconvenience.

Other Documents