117971-59-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117971-59-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,7 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117971-59:
(8*1)+(7*1)+(6*7)+(5*9)+(4*7)+(3*1)+(2*5)+(1*9)=152
152 % 10 = 2
So 117971-59-2 is a valid CAS Registry Number.
117971-59-2Relevant articles and documents
Reaction of Methyl Propiolate with Thiosemicarbazones
Nakhmanovich, A. S.,Karnaukhova, R. V.,Komarova, T. N.,Sigalov, M. V.,Kron, L. A.
, p. 103 - 105 (2007/10/02)
Methyl propiolate reacts with thiosemicarbazones in methanol in the presence of triethylamine to give 2-benzylidene(thenylidene, or furfurylidene)azino-3H-1,3-thiazin-4-ones.
