136850-84-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136850-84-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,8,5 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 136850-84:
(8*1)+(7*3)+(6*6)+(5*8)+(4*5)+(3*0)+(2*8)+(1*4)=145
145 % 10 = 5
So 136850-84-5 is a valid CAS Registry Number.
136850-84-5Relevant articles and documents
Synthesis of parvisoflavones A and B
Tsukayama,Kawamura,Tamaki,Horie
, p. 1704 - 1706 (1991)
Parvisoflavone B (2',4',5-trihydroxy-2'',2''-dimethylpyrano[5'',6''-g]isoflavone was synthesized by regioselective reduction of 7-[2,4-bis(benzyloxy)phenyl]-2,3-dihydro-5-methoxy-2,2-dimethyl-4H,6H- benzo[1,2-b:5,4-b']dipyrano-4,6-dione with sodium borohy