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57078-37-2

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57078-37-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57078-37-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,7 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57078-37:
(7*5)+(6*7)+(5*0)+(4*7)+(3*8)+(2*3)+(1*7)=142
142 % 10 = 2
So 57078-37-2 is a valid CAS Registry Number.

57078-37-2Relevant articles and documents

4-N-acylfortimicins B and the preparation of fortimicin A from fortimicin B.

Tadanier,Martin,Kurath,Goldstein,Johnson

, p. 91 - 102 (2007/10/02)

Selective 4-N-acylation of fortimicin B (2) has been accomplished by 4-N-acylation of 1,2',6'-tri-N-benzyloxycarbonylfortimicin B (4) followed by hydrogenolysis of the N-protecting benzyloxycarbonyl groups. In this manner, fortimicin B was converted into fortimicin A (1), and a series of 4-N-acylfortimicins B (3) was prepared for antibacterial assay. The key intermediate, 1,2',6'-tri-N-benzyloxycarbonylfortimicin B, was prepared either directly from fortimicin B or by converting fortimicin A into 1,2',6',2''-tetra-N-benzyloxycarbonylfortimicin A (6a), followed by selective hydrolysis of the 4-N-(N-benzyloxycarbonyl)glycyl group of the latter.

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