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498554-04-4

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498554-04-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 498554-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,8,5,5 and 4 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 498554-04:
(8*4)+(7*9)+(6*8)+(5*5)+(4*5)+(3*4)+(2*0)+(1*4)=204
204 % 10 = 4
So 498554-04-4 is a valid CAS Registry Number.

498554-04-4Relevant articles and documents

Synthesis of the AB-ring segment for the convergent construction of the left half in ciguatoxin

Tanaka, Hideki,Kawai, Kentaro,Fujiwara, Kenshu,Murai, Akio

, p. 10017 - 10031 (2002)

The synthesis of the AB-ring segment aiming at the convergent construction of the left half in ciguatoxin (CTX1B) has been achieved by a strategy based on ring-closing metathesis (RCM) and diastereocontrolled hydroboration to cyclic vinyl ethers.

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