; and (B) 4 clicks away from a website that is specific to— (i) the product; or (ii) the class of products to which the product belongs. (3) Fragrance ingredients and colorants With respect to the requirement under paragraph (b)(1)(A) and (c)(1)(A)(ii), for an intentionally added ingredient that is a fragrance ingredient or a colorant, a manufacturer may list the functional purpose of that intentionally added ingredient as fragrance ingredient or colorant , as applicable. (4) CAS number (A) In general With respect to each intentionally added ingredient described in subsection (b)(1)(A)(i) that a manufacturer is required to post under paragraph (1)(A)(i), the manufacturer shall, subject to subparagraph (B), include the Chemical Abstracts Service number with respect to that ingredient. (B) Unavailability For the purposes of subparagraph (A), if a Chemical Abstracts Service number with respect to an intentionally added ingredient is not available, or if the intentionally added ingredient is confidential business information, a manufacturer shall, when posting the information required under paragraph (1)(A)(i), use the phrase not available or withheld , respectively, with respect to the ingredient. (5) Safety data sheets A manufacturer that is required under this subsection to disclose information with respect to a cleaning product may make that disclosure in a safety data sheet with respect to that product if— (A) the manufacturer posts the safety data sheet on a publicly available website of the manufacturer