4-Methylumbelliferone (CAS 90-33-5) from Japan
4-Methylumbelliferone (4-MU) is a methylcoumarin derivative with a lactone ring structure, making it classifiable under tariff item 2932.20.00 as a lactone. It is widely used as a fluorogenic substrate in biochemical assays and as a laser dye.
Duty Rate — Japan → Canada
0%
Import Tips
• Ensure the product is a separate chemically defined organic compound per Chapter 29 Note 1(a)
• Declare the CAS number (90-33-5) on the commercial invoice to facilitate CBSA classification
• Verify whether the product requires a controlled substances permit if used in research