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90044-45-4

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90044-45-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90044-45-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,4 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90044-45:
(7*9)+(6*0)+(5*0)+(4*4)+(3*4)+(2*4)+(1*5)=104
104 % 10 = 4
So 90044-45-4 is a valid CAS Registry Number.

90044-45-4Upstream product

90044-45-4Relevant academic research and scientific papers

Total Synthesis of (+/-)-Surugatoxin

Inoue, Shoji,Okada, Kunisuke,Tanino, Hideo,Hashizume, Kiyomatsu,Kakoi, Hisae

, p. 2729 - 2752 (2007/10/02)

Total synthesis of surugatoxin 1, isolated from the toxic Japanese ivory shell (Babylonia japonica), was achieved from 6-bromoisatin by a stepwise ring construction involving two key steps: the stereospecific cyclization (17 -> 18) and hydration (33b -> 1).

TOTAL SYNTHESIS OF (+/-)-SURUGATOXIN

Inoue, Shoji,Okada, Kunisuke,Tanino, Hideo,Hashizume, Kiyomatsu,Kakoi, Hisae

, p. 4407 - 4410 (2007/10/02)

Total synthesis of surugatoxin 1, isolated from the toxic Japanese ivory shell (Babylonia japonica), was achieved from 6-bromoisatin by stepwise ring construction involving two key steps: the stereospecific cyclization(9->10) and hydration (17->1).

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