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219606-74-3

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219606-74-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219606-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,6,0 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 219606-74:
(8*2)+(7*1)+(6*9)+(5*6)+(4*0)+(3*6)+(2*7)+(1*4)=143
143 % 10 = 3
So 219606-74-3 is a valid CAS Registry Number.

219606-74-3Relevant articles and documents

Total Synthesis of Cryptophycins-1, -3, -4, -24 (Arenastatin A), and -29, Cytotoxic Depsipeptides from Cyanobacteria of the Nostocaceae

White, James D.,Hong, Jian,Robarge, Lonnie A.

, p. 6206 - 6216 (2007/10/03)

A convergent synthesis of cryptophycins has been developed in which (5S,6R)-5-hydroxy-6-methyl-8-phenylocta-2(E),7(E)-dienoic acid (A) is coupled with an amino acid segment (B). Two stereo-selective routes to A are described, the first employing allylatio

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