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902137-36-4

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902137-36-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 902137-36-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,2,1,3 and 7 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 902137-36:
(8*9)+(7*0)+(6*2)+(5*1)+(4*3)+(3*7)+(2*3)+(1*6)=134
134 % 10 = 4
So 902137-36-4 is a valid CAS Registry Number.

902137-36-4Relevant articles and documents

An improved synthesis of (-)-martinellic acid via radical addition-cyclization-elimination reaction of chiral oxime ether

Miyata, Okiko,Shirai, Atsushi,Yoshino, Shintaro,Takeda, Yoshifumi,Sugiura, Makiko,Naito, Takeaki

, p. 893 - 896 (2006)

A concise formal synthesis of (-)-martinellic acid has been accomplished by preparing optically active dipyrroloquinoline as a key synthetic intermediate, which was prepared via the radical addition-cyclization-elimination of oxime ether carrying an unsaturated ester followed by two chemoselective reductions of the carbonyl groups. Georg Thieme Verlag Stuttgart.

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