US Customs Ruling (CROSS)
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Issuing Country : UNITED STATES
Date Of Issue : 2019-02-19T00:00:00
MetaSmart Dry, isopropyl ester of 2-hydroxy-4-methylthiobutanoic acid
The subject merchandise is described as an isopropyl ester of 2-hydroxy-4-methylthiobutanoic acid. MetaSmart is not itself methionine, rather, it is the isopropyl ester of the acid dl-Hydroxy analogue of dl-methionine. It is referred to as HMBi for short and its CAS number is 57296-04-5. The acid form of the analog is dl-2-hydroxy-4-(methylmercapto) butyric acid, and it is also known as 2-Hydroxy-4-(methylthio) butyric (or butanoic) acid, or HMB or HMBa. The International Non-Proprietary Names (INN) of HMBa is imported and sold by Adiesso under the trade name Rhodimet AT88, and the CAS registry number of the product is 583-91-5.
Description : MetaSmart Dry
Please importantly note that only the relevant portion of the related US Ruling (Cross) is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
Source : US Customs Ruling (CROSS)
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