228270-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 228270-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,8,2,7 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 228270-77:
(8*2)+(7*2)+(6*8)+(5*2)+(4*7)+(3*0)+(2*7)+(1*7)=137
137 % 10 = 7
So 228270-77-7 is a valid CAS Registry Number.
228270-77-7Relevant academic research and scientific papers
Wrackmeyer, Bernd,Kehr, Gerald,Suess, Juergen,Molla, Elias
, p. 82 - 92 (1999)
The tetraynes R1C≡C-SiMe2-C≡C-SiMe 2-C≡C...SiMe2-C≡CR2 [R1 = R2 = H (1a), SnMe3 (1b), R1 = SiMe3, R2 = H (2a), R2 = SnMesu
