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137609-52-0

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137609-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137609-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,6,0 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137609-52:
(8*1)+(7*3)+(6*7)+(5*6)+(4*0)+(3*9)+(2*5)+(1*2)=140
140 % 10 = 0
So 137609-52-0 is a valid CAS Registry Number.

137609-52-0Relevant articles and documents

Substituent Effect on Oxidative Cyclization of Aldehyde Thiosemicarbazones with Ferric Chloride

Noto, Renato,Buccheri, Francesco,Cusmano, Giuseppe,Gruttadauria, Michelangelo,Werber, Giuseppe

, p. 1421 - 1427 (2007/10/02)

The reactivity of aldehyde thiosemicarbazones 1 with ferric chloride solutions was examined.When compounds 1 are not substituted on the N-2 nitrogen atom formation of 1,3,4-thiadiazole 3 heterocyclic ring was observed.In contrast 1,2,4-triazoline 4 and/or

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