129777-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129777-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,7,7 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 129777-17:
(8*1)+(7*2)+(6*9)+(5*7)+(4*7)+(3*7)+(2*1)+(1*7)=169
169 % 10 = 9
So 129777-17-9 is a valid CAS Registry Number.
129777-17-9Relevant academic research and scientific papers
Addition of stannyl phosphines to alkynes and allenes
Mitchell, Terence N.,Belt, Heinz-Joachim
, p. 167 - 176 (2007/10/02)
Diphenyl(trimethylstannyl)phosphine adds to alkynes (both terminal and nonterminal) and allenes under free radical conditions.The former reaction occurs regiospecifically with preferential formation of E-isomers, the latter regioselectively.Product identi
