<1R-(1α,4β,4aβ,5α,6α,7β,8aβ)>-Octahydro-4,8,8-trimethyl-6,7-bis<(2-methyl-2(E)-butenoyl)oxy>-9-methylene-1,5-methanonaphthalen-2(1H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 131657-29-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,5 and 7 respectively; the second part has 2 digits, 2 and 9 respectively. Calculate Digit Verification of CAS Registry Number 131657-29: (8*1)+(7*3)+(6*1)+(5*6)+(4*5)+(3*7)+(2*2)+(1*9)=119 119 % 10 = 9 So 131657-29-9 is a valid CAS Registry Number.
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