21663-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21663-56-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,6 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21663-56:
(7*2)+(6*1)+(5*6)+(4*6)+(3*3)+(2*5)+(1*6)=99
99 % 10 = 9
So 21663-56-9 is a valid CAS Registry Number.
InChI:InChI=1/C9H17NS/c1-3-5-6-9(4-2)7-10-8-11/h9H,3-7H2,1-2H3/t9-/m1/s1
21663-56-9Relevant articles and documents
Synthesis and spectroscopic analysis of substituted 2-aminothiazolines
Ferreira, Renan B.,Tormena, Claudio F.,Almeida, Wanda P.
, p. 186 - 190 (2013/05/22)
2-Aminothiazolines can exist in two tautomeric species, amino and imino forms, which can theoretically exist as two stereoisomers. Several methods and techniques have been used to evaluate tautomeric process, but in this case 15N NMR spectrosco
