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671818-04-5

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671818-04-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 671818-04-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,8,1 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 671818-04:
(8*6)+(7*7)+(6*1)+(5*8)+(4*1)+(3*8)+(2*0)+(1*4)=175
175 % 10 = 5
So 671818-04-5 is a valid CAS Registry Number.

671818-04-5Relevant articles and documents

Synthesis of a Derivative of the Peptaibol-Antibiotic Trichovirin I 1B by Means of the 'Azirine/Oxazolone Method'

Luykx, Roeland T. N.,Linden, Anthony,Heimgartner, Heinz

, p. 4093 - 4111 (2003)

According to the earlier published synthesis of the C-terminal nonapeptide of Trichovirin I 1B, Z-Ser(tBu)-Val-Aib-Pro-Aib-Leu-Aib-Pro-Leuol (5), the complete tetradecapeptide Z-Aib-Asn(Trt)-Leu-Aib-Pro-Ser( tBu)-Val-Aib-Pro-Aib-Leu-

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