99808-69-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99808-69-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,0 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99808-69:
(7*9)+(6*9)+(5*8)+(4*0)+(3*8)+(2*6)+(1*9)=202
202 % 10 = 2
So 99808-69-2 is a valid CAS Registry Number.
99808-69-2Relevant academic research and scientific papers
NOVEL REACTIONS WITH CARBON SUBOXIDE. IX. ANOMALOUS BEHAVIOUR OF C3O2 IN THE SYNTHESIS OF 1,4-BIS(p-NITROPHENYL)-1,2,3-BUTATRIENE
Bonsignore, Leonardo,Loy, Giuseppe,Secci, Daniela,Cabiddu, Salvatore
, p. 625 - 626 (2007/10/02)
The butatriene, 3, instead of pentatetraene, 4, has been obtained by an anomalous Wittig reaction of carbon suboxide, 1, with the ylide 2.
