Y18501 

Y18501 is a oxysterol-binding protein (OSBPI) inhibitor with a similar structure to Oxathiapiprolin. Y18501 shows strong inhibitory activities against Phytophthora spp. and Pseudoperonospora cubensis, with EC₅₀ ranging from 0.0005 to 0.0046 μg/mL. Y18501 shows excellent protective and curative activities against P. cubensis. Y18501 in combination with Chlorothalonil (HY-N6625) can significantly promote the inhibition of P. cubensis^[1].

Y18501 (25 g a.i./ha 或 50 g a.i./ha) 在温室条件下对黄瓜霜霉病的防治效果超过 60%^[1]。
Y18501 在温室和田间对黄瓜霜霉病均表现出防治效果，施用 25 g a.i./ha 时防治效果分别为 72.3% 和 78.9%，施用 50 g a.i./ha 时防治效果分别为 80.8% 和 82.2%^[1]。
Y1850 (10.012-0.333 μg/mL) 的防治活性大于根治活性，接种前 24 h 施用 Y1850 对黄瓜霜霉病的防治效果为 70.11 和 99.43%，显著高于接种后 24 h 施用 Y1850^[1]。
Y18501 与 Chlorothalonil (HY-N6625) 在 1:100、 1:70 和 1:50 的协同作用下对黄瓜霜霉病具有较强的协同作用，协同作用比分别为 2.00、1.83 和 2.64^[1]。

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

536.60

C₂₇H₂₆F₂N₆O₂S

2410627-32-4

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Wang B, et al. Activity of the new OSBP inhibitor Y18501 against Pseudoperonospora cubensis and its application for the control of cucumber downy mildew. Pestic Biochem Physiol. 2023;194:105415.  [Content Brief]