121688-13-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121688-13-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,8 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121688-13:
(8*1)+(7*2)+(6*1)+(5*6)+(4*8)+(3*8)+(2*1)+(1*3)=119
119 % 10 = 9
So 121688-13-9 is a valid CAS Registry Number.
121688-13-9Relevant articles and documents
THE ANOMERIC EFFECT IN SEVEN-MEMBERED RINGS: A CONFORMATIONAL STUDY OF 1-OXA AND 3-OXA DERIVATIVES OF BENZOCYCLOHEPTENE BY NMR
Desilets, S.,St-Jacques, M.
, p. 7027 - 7036 (1988)
The 2-methoxy derivatives 5 and 7 of 3- and 1-benzoexepins (4 and 6 respectively) have been investigated by (13)C and (1)H dynamic NMR methods.The results reveal the presence of two conformer, Ca and Ce (94:6), for 5 due to a strong
