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Prohexadione calcium
Prohexadione calcium (CAS 127277-53-6) is a strategically designed cyclohexanedione-type plant growth regulator engineered for gibberellin biosynthesis inhibition in agricultural crop management. This molecule functions as the calcium salt of prohexadione (3β,5β-dihydroxy-4β-propionylcyclohex-1-en-1-one), featuring a rigid cyclohexenone core with multiple hydroxyl and carbonyl functionalities that enable chelation with 2-oxoglutarate-dependent dioxygenases. The calcium counterion enhances water solubility and field stability compared to the free acid form, while the unique 3,5-dihydroxy-4-acyl substitution pattern provides selective inhibition of GA 3β-hydroxylase, effectively reducing vegetative growth without compromising yield. This intermediate is particularly valuable for constructing foliar formulations that control lodging in cereals, manage canopy architecture in fruit trees, and improve harvest efficiency in row crops. Manufactured with purity ≥98% under controlled conditions, it supports agrochemical development programs requiring reliable gibberellin biosynthesis inhibitors with favorable environmental profiles.
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Product Name
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Prohexadione calcium
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CAS Number
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127277-53-6
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Chinese Name
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调环酸钙
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Synonyms
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Calcium prohexadione; Prohexadione-Ca; BAS 125 55W; Apogee® active ingredient; (C₁₀H₁₂O₅)₂Ca (standard dimeric form)
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Chinese Synonyms
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调环酸钙盐; 丙酰环己二酮钙; 植物生长延缓剂调环酸钙; BAS125-55W 有效成分
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Molecular Formula
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C₂₀H₂₄CaO₁₀ (standard dimeric salt) / C₁₀H₁₃Ca₂O₅⁺
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Molecular Weight
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480.48 g/mol
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Purity
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≥ 98% (HPLC area normalization)
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Product Category
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Agrochemical Intermediates / Plant Growth Regulators / Cyclohexanedione Derivatives
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Appearance
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Off-white to light yellow Crystalline Powder
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Melting Point
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>360°C (decomposition, literature reference recommended)
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Solubility
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Soluble in water (~157 g/L at 20°C); slightly soluble in organic solvents
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Storage Conditions
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Store in a cool, dry, well-ventilated area away from light and moisture. Keep container tightly closed. Protect from strong acids to avoid calcium salt displacement or cyclohexenone degradation.
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Shelf Life
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24 months under recommended storage conditions
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Packaging
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100g/bottle, 500g/bottle, 1kg/bottle, 5kg/drum, or customized according to customer requirements
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Applications
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Cereal lodging control (wheat, barley, rice), fruit tree canopy management, vine growth regulation, turf height suppression, gibberellin biosynthesis research, agrochemical formulation development
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Reactivity
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Suitable for salt exchange reactions, esterification of hydroxyl groups, chelation studies with metal ions, and formulation optimization with surfactants/adjuvants
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Special Note
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✅ Gibberellin Biosynthesis Inhibitor—selective 3β-hydroxylase blocker with favorable environmental degradation profile. Calcium salt form enhances field stability vs. free acid. Part of our plant growth regulator series.
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