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157521-18-1

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157521-18-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157521-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,5,2 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157521-18:
(8*1)+(7*5)+(6*7)+(5*5)+(4*2)+(3*1)+(2*1)+(1*8)=131
131 % 10 = 1
So 157521-18-1 is a valid CAS Registry Number.

157521-18-1Downstream Products

157521-18-1Relevant articles and documents

Synthesis of Benzo-Fused, 7,5- and 7,6-Fused Azepinones as Conformationally Restricted Dipeptide Mimetics

Robl, Jeffrey A.,Karanewsky, Donald S.,Asaad, Magdi M.

, p. 1593 - 1596 (2007/10/02)

Methodology for the generation of novel conformationally restricted dipeptide mimetics 9 and 16 has been developed.The key step involved intramolecular addition of an oxonium ion to the proximal indoline/tetrahydroquinoline aromatic ring.A dramatic differ

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