Conn. Gen. Stat. § 12-424

(2) Liability of purchaser; release. If the purchaser of a business or stock of goods fails to withhold the purchase price as required, such purchaser becomes personally liable for the payment of the amount required to be withheld by the purchaser to the extent of the purchase price, valued in money. Within sixty days after receiving a written request from the purchaser for a certificate, the commissioner shall either issue the certificate or mail notice to the purchaser at said purchaser's address as it appears on the records of the commissioner of the amount that must be paid as a condition of issuing the certificate. Failure of the commissioner to mail the notice shall release the purchaser from any further obligation to withhold the purchase price as above provided. The time within which the obligation of the successor may be enforced shall start to run at the time the person sells out his or her business or stock of goods or quits the business or at the time that the assessment against such person becomes final, whichever event occurs later.

Cited. 44 CS 361.