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74516-62-4

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74516-62-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74516-62-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,1 and 6 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74516-62:
(7*7)+(6*4)+(5*5)+(4*1)+(3*6)+(2*6)+(1*2)=134
134 % 10 = 4
So 74516-62-4 is a valid CAS Registry Number.

74516-62-4Relevant articles and documents

Antileukemic Compounds Derived from the Chemical Modification of Macrocyclic Trichothecenes. 1. Derivatives of Verrucarin A

Jarvis, Bruce B.,Stahly, G. Patrick,Pavanasasivam, Gowsala,Mazzola, Eugene P.

, p. 1054 - 1058 (2007/10/02)

Verrucarin A (2) was epoxidized to give the β-9,10-epoxide 7 (major product) and α-9,10-epoxide 9 (minor product).The β-epoxide 7 and its acetate 8 exhibit high in vivo antileukemic activity against P-388 mouse leukemia, whereas 2 and 9 are inactive.Epoxidation of verrucarin B (3) and roridin A (1) to their respective β-9,10-epoxides (11 and 12, respectively) also yields compounds with substantially increased activity.Allylic alcohols derived from 2, α-C8 (20), β-C8 (14), and C16 (15), were synthesized and tested; only 15 exhibited substantial in vivo activity.

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