81910-91-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81910-91-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,1 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81910-91:
(7*8)+(6*1)+(5*9)+(4*1)+(3*0)+(2*9)+(1*1)=130
130 % 10 = 0
So 81910-91-0 is a valid CAS Registry Number.
81910-91-0Relevant articles and documents
1,3-DIPOLAR ADDITION TO 2-(DIAZOACETYL)FURAN
Kartsev, V. G.
, p. 567 - 569 (2007/10/02)
It was established that the reaction of 2-(diazoacetyl)furan with dimethyl acetylenedicarboxylate and N-substituted maleimides leads to 1,3-dipolar addition to the diazomethine fragment with a subsequent hydrogen shift, retention of the furan ring, and th
