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137528-08-6

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137528-08-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137528-08-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,2 and 8 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 137528-08:
(8*1)+(7*3)+(6*7)+(5*5)+(4*2)+(3*8)+(2*0)+(1*8)=136
136 % 10 = 6
So 137528-08-6 is a valid CAS Registry Number.

137528-08-6Relevant articles and documents

Chemistry of O-silylated ketene acetals: A stereoselective synthesis of optically active carbapenem antibiotics, (+)-thienamycin and (+)-PS-5

Kita,Shibata,Miki,Takemura,Tamura

, p. 12 - 20 (2007/10/02)

A stereoselective synthesis of the chiral thienamycin intermediate (16) involving a diastereoselective Michael addition and a silicon-induced Pummerer-type reaction is described. In a similar way, the key intermediate for (+)-PS-5 was also prepared from 4

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