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139891-99-9

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139891-99-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139891-99-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,8,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139891-99:
(8*1)+(7*3)+(6*9)+(5*8)+(4*9)+(3*1)+(2*9)+(1*9)=189
189 % 10 = 9
So 139891-99-9 is a valid CAS Registry Number.

139891-99-9Relevant academic research and scientific papers

Phytochemical studies on meliaceous plants. VII. The structures of two new ionone glucosides from Melia toosendan Sieb. et Zucc. and a novel type of selective biooxidation by a kind of protease

Nakanishi,Konishi,Murata,Inada,Fujii,Tanaka,Fujiwara

, p. 2529 - 2533 (2007/10/02)

Two new ionone glucosides, melia-ionosides A and B, were isolated from leaves of Melia toosendan Sieb. et Zucc. (Meliaceae) and their structures were elucidated based on combinations of chemical, spectral, and X-ray analytical studies. In addition, a novel type of selective bio-oxidation by a kind of protease (Molsin) was found during the course of the structural elucidation.

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