131391-92-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131391-92-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,3,9 and 1 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 131391-92:
(8*1)+(7*3)+(6*1)+(5*3)+(4*9)+(3*1)+(2*9)+(1*2)=109
109 % 10 = 9
So 131391-92-9 is a valid CAS Registry Number.
131391-92-9Relevant articles and documents
Reductive Alkylation of Nitrochromenes. Synthesis of Spiro--lactams
Subramanian, S.,Desai, Umesh R.,Trivedi, Girish K.
, p. 1733 - 1742 (2007/10/02)
Alpha alkylation of the nitro group of nitrochromenes was performed by trapping of the nitronate salt generated by NaBH4 reduction with a Michael acceptor.The adducts were used for the synthesis of spiro--lactams.