186689-49-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 186689-49-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,6,8 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 186689-49:
(8*1)+(7*8)+(6*6)+(5*6)+(4*8)+(3*9)+(2*4)+(1*9)=206
206 % 10 = 6
So 186689-49-6 is a valid CAS Registry Number.
186689-49-6Relevant articles and documents
Aryl substituent effects on the thermal interconversion of cyclobutenediones and 1,2-bisketenes
Liu, Ronghua,Tidwell, Thomas T.
, p. 2757 - 2762 (2007/10/03)
The rates and activation parameters are reported for ring closure of 1,2 bisketenes O=C=C(C6H4X)C(SiMe3)=C=O (7), generated by photolysis of the corresponding cyclobutenediones 6. The rates at 70°C are correlated with the
