Description

Calcium Bis[(S)-2-Hydroxy-4-(Methylthio)Butyrate] is a high-purity, organically-bound calcium source derived from the hydroxyl analogue of methionine. This compound is specifically valued for its superior bioavailability and stability compared to inorganic calcium salts, making it an essential nutrient source in modern animal nutrition. It is primarily utilized by feed additive manufacturers and premix producers seeking to optimize calcium and methionine delivery for livestock, poultry, and aquaculture.

Application

• Animal Feed Additive: A key source of bioavailable calcium and (S)-2-hydroxy-4-(methylthio)butyric acid (HMTBa) for poultry, swine, and ruminant diets.
• Aquaculture Nutrition: Incorporated into formulated feeds for shrimp and fish to support skeletal development and metabolic functions.
• Pet Food & Specialty Nutrition: Used in premium pet food and other specialty animal feeds requiring highly digestible mineral supplements.
• Pharmaceutical & Nutraceutical Precursor: Serves as a starting material or intermediate in the synthesis of specialized calcium supplements and veterinary medicinal products.
• Research & Development: Employed in biochemical and nutritional studies investigating mineral absorption and amino acid metabolism.

Basic Information

Product Name	Calcium Bis[(S)-2-Hydroxy-4-(Methylthio)Butyrate]
CAS No.	71597-87-0
Molecular Formula	C10H18CaO6S2
Molecular Weight	338.44 g/mol
Synonyms	Calcium (2-Hydroxy-4-(methylthio)butyrate); Calcium HMTB; Calcium 2-Hydroxy-4-methylthiobutanoate; Calcium salt of HMTBa; Calcium (S)-HMB-Ca; Alimet® Calcium Salt; MHA® Calcium; Feed-grade Calcium Methionine Hydroxy Analogue; Calcium (S)-2-Hydroxy-4-(methylthio)butanoate
EINECS	Contact for details

Quality Control

Our Calcium Bis[(S)-2-Hydroxy-4-(Methylthio)Butyrate] is manufactured under a strict quality management system to ensure batch-to-batch consistency and efficacy. Production adheres to relevant feed safety and GMP guidelines. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles, available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed after each use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Calcium (Ca) Content	11.0 - 12.5%
Moisture (Loss on Drying)	≤ 2.0%
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 2 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.