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Pimaron, also known as PIMAROL, is a synthetic chemical compound belonging to the class of pyrazole derivatives. It is primarily used as a plant growth regulator, specifically as a gibberellin biosynthesis inhibitor. By inhibiting gibberellin production, Pimaron helps control plant growth, promotes fruit setting, and enhances fruit quality in various crops such as tomatoes, cucumbers, and melons. It is applied as a foliar spray or soil drench, and its effectiveness is dependent on proper application rates and timing. Pimaron is considered a valuable tool in agricultural practices to manage plant growth and improve crop yield and quality.

1686-59-5

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1686-59-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1686-59-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,8 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1686-59:
(6*1)+(5*6)+(4*8)+(3*6)+(2*5)+(1*9)=105
105 % 10 = 5
So 1686-59-5 is a valid CAS Registry Number.

1686-59-5Relevant academic research and scientific papers

Partial Synthesis of 9,10-Syn Diterpenes via Tosylhydrazone Reduction: (-)-(9β)-Pimara-7,15-diene and (-)-(9β)-Isopimaradiene

Chu, Min,Coates, Robert M.

, p. 4590 - 4597 (2007/10/02)

(9β)-Pimara-7,15-diene (3), a proposed intermediate in the biosynthesis of the momilactone phytoalexins (1 and 2) from rice, and its C-13 epimer, (9β)-isopimara-7,15-diene (4), were synthesized from methyl pimara- and isopimara-8,15-dien-18-oates (8b and 8a, respectively).Allylic oxidation of 8a and 8b as well as the derived diterpene hydrocarbons 15a and 15b with chromium trioxide-dipyridine complex afforded 8,15-dien-7-ones 9a, 9b, 16a, and 16b (35-54percent).Lithium-ammonia reduction of 9a, 16a, and 16b gave predominantly trans,anti,trans-isopimara- and -pimara-15-en-7-ones 10, 17a, and 17b.In contrast, catecholborane reduction of the tosylhydrazones of 9a and 9b provided methyl (9β)-isopimara- and (9β)-pimara-7,15-dien-20-oates (23a and 23b) having the 9,10-syn stereochemistry.The parent diterpenes, 3 and 4, were obtained by carboxyl-to-methyl conversions.In a collaborative investigation 3 was tentatively identified as one of five diterpene hydrocarbons produced upon incubation of (E,E,E)-geranylgeranyl pyrophosphate with a crude enzyme extract from UV-treated rice plants.

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