Description

Rho-Isohumuloneb1 CAS NO 16827-08-0 is a key isomer of isohumulone, a principal component of hop-derived bitter acids. This compound is essential for imparting and controlling the characteristic bitter flavor profile in finished beers. It is a critical raw material for breweries and flavor houses seeking precise, consistent, and high-quality bitterness in their products. Its controlled use is fundamental to achieving brand-specific taste and ensuring batch-to-batch consistency in brewing.

Application

• Beer Bitterness Standardization: Used as a reference standard and active ingredient to achieve precise and consistent International Bitterness Units (IBU) in lager, ale, and other beer styles.
• Post-Fermentation Bittering: Applied for flavor adjustment and bitterness correction after the boiling process, allowing for greater control without impacting hop aroma.
• Low-Alcohol & Non-Alcoholic Beer Production: Essential for compensating for the lack of bitterness extraction that typically occurs during standard wort boiling in these specialized brewing processes.
• Flavor & Fragrance Industry: Serves as a key component in the creation of natural hop flavors and savory flavorings for various food and beverage applications.
• Brewing Research & Quality Control: Employed as an analytical standard in HPLC and other methods to quantify iso-α-acid content and ensure product quality.
• Pre-Isomerized Hop Product Formulation: A vital constituent in the manufacture of advanced hop products like isomerized hop pellets and extracts for optimized brewing efficiency.

Basic Information

Product Name	Rho-Isohumuloneb1
CAS No.	16827-08-0
Molecular Formula	C21H30O5
Molecular Weight	362.46 g/mol
Synonyms	ρ-Isohumulone B1; trans-Isohumulone B; Iso-α-acid B1; (3R,4R)-3,4-Dihydroxy-5-(3-methylbut-2-en-1-yl)-2-(3-methyl-1-oxobutyl)-4-[(2S)-4-methyl-1-oxopent-3-en-1-yl]cyclopent-2-en-1-one; Isohumulone B1; Hop bitter acid isomer B1
EINECS	Contact for details

Quality Control

Our Rho-Isohumuloneb1 is manufactured and tested to meet the stringent requirements of the food and brewing industries. Quality is assured through rigorous analytical controls including HPLC for purity and isomer profile verification. A comprehensive Certificate of Analysis (COA) detailing assay, related substances, and physical characteristics is provided with each batch to ensure traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) to minimize oxidation. Keep the container in a cool, dry, and well-ventilated area away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to Amber Viscous Liquid
Identification (HPLC)	Conforms to Reference Standard
Assay (HPLC)	≥ 95.0% (Sum of Isomers)
Rho-Isohumuloneb1 Content	≥ 85.0% (of total iso-α-acids)
Related Substances (HPLC)	Total related compounds ≤ 5.0%
Solvent Residue (GC)	Meets ICH Guidelines
Heavy Metals	≤ 10 ppm

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