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99956-20-4

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99956-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99956-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,5 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99956-20:
(7*9)+(6*9)+(5*9)+(4*5)+(3*6)+(2*2)+(1*0)=204
204 % 10 = 4
So 99956-20-4 is a valid CAS Registry Number.

99956-20-4Relevant articles and documents

Formylation Products of Thioamides; Part 12. Synthesis of Thiazoles by the Reaction of S-Alkylated Thioamides or Thioureas with Acid Derivatives

Liebscher, Juergen,Mitzner, Elke

, p. 414 - 417 (2007/10/02)

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